Browsers are rails, web sites are trains (authoring conformance requirements)

html5,w3c,authoring conformance

There's some ongoing debate about whether or how the HTML specification should or shouldn't contain "authoring requirements".  I thought I'd write about the general need.

In general, a standard is a (specification of an) interface, across which multiple kinds of agents can communicate. The usual reason for "conformance classes" in protocol specifications is to improve interoperability between agents of the various classes, as an extension of the Robustness principle (or Postel's Law): Be conservative in what you do; be liberal in what you accept from others.

As an engineering principle, robustness predates software by a long shot. There is a standard for railroad tracks, and a separate standard for rail car wheels. The railroad track standard says how wide a track should be, and gives some tolerances which should be kept within. Similarly, a rail car wheel standard would define how far apart the rail car wheels should be, and give restrictions and guidelines on the center of gravity of the car, guidelines on how the flanges of a rail car wheel should be constructed and some tolerances of those. The goal of the standard and the tolerances is to avoid derailment. The rules for the rails and the rules for the rail car wheels go together.

How does this map to the current HTML debate? The current HTML spec contains requirements for HTML interpreting agents (browsers, or the rails); the discussion is around the standards for HTML documents (rail cars) and for the behavior of document producers as well.

The goal of interoperability is to keep the trains on the rails -- to insure that web pages presented are received and interpreted as expected. Following the robustness principle, It is reasonable to have a conservative standard for HTML documents (and authoring tools), and for that standard to be more conservative then would be required if every implementation (rail system) exactly followed all of the standard. Document conformance, recommended document practice, and backward compatible advisory components are all reasonable targets for specification.

Of course, designing a good set of conservative guidelines involves negotiating set of tradeoffs. Is there only one "conservative" guideline? Are there several, depending on the importance of backward compatibility with older browsers? Should the fact that some content was previously conforming have weight? Those are still the open questions.

But conservative guidelines for content and authoring tools are important, and not (as originally noted in the bug report cited above) "ideology" or "loyalty".

Resources are Angels; URLs are Pins

w3c,html5,representation,resource,angels,pins,uri,url,iri

Everyone knows what a URL is, right? It's just a simple thing -- a kind of pointer to something. You'd think a standard around URLs would be easy, compared to something as complicated as a document description and application environment.

Except that every little bit of what URLs are, how they work, how to use them and find them, has endless complexities and is a source of disagreement! No wonder web standards are hard.

Trying to understand all of the issues around URLs winds up pushing into philosophy of language, knowledge representation and AI systems, security and spoofing, metadata, the way in which academic citations are made, the requirements for gracefully moving to IPv6, the upgrade of the domain name system to allow non-English domain names (that use letters other than A-Z), and so on and so forth.

This post starts to explore a few of the issues, why they're hard, and why we're still arguing about them. I'll expand it or blog more over time; comments appreciated.

Sometimes, when you're dealing with a hard subject in a committee, you wind up with a "bike shed" discussions (see Parkinson's Law of Triviality). In the case of URLs, I think the "bike shed" is and has been the terminology -- people argue about what to call things, rather than harder things to talk about, like how it works and what the requirements are. "Just rename the spec to be X, and it's fine, I'm ok if you call it an X spec, I just don't like you calling it a Y."

"Universal" vs. "Uniform"

Perhaps it was hubris to envision a world all connected by links, that led to a vision of the World Wide Web where there was not just an identifier, a resource identifier, but a Universal resource identifier. Universal: it could be used for any situation when you wanted to identify something.  Now, something that is universal actually needs to work in all of the situations that might need an identifier (whatever that is) for identifying a resource (whatever that is).

But in the history of computer science, there have been lots and lots of different kinds of identifiers used for reference; in the history of language, you might think that any "noun phrase" is a kind of identifier for something. So the requirements for a Universal resource identifier are pretty extensive, hard to sort out. The group charted with standardizing these URI things -- bringing it from a vision to a standard -- (which I chaired), first tried to tackle the problem of not really wanting to solve that universal problem. How could you identify anything? So, in the great bike shed tradition, after hundreds (perhaps thousands) of emails on the subject, "Universal" was changed to "Uniform". Something that is "Uniform" just has to work the same wherever it's used, but if it's "Universal", it would have to be good for *every* kind of resource identification, which is ambitious but (alas) impossible.

"Identifiers" become "Names" and "Locators"

One of the great advances in distributed system design was the introduction of a kind of network design that separated naming, addressing, and routing (host name, IP address, which gateway to send it to.)   Here at the application layer (that is, the web resting on top of the internet), this distinction has been recapitulated: is a URL the "name" of something, which gives you a hint as to how you get at it, is it really the "address" of something, telling you where on the Internet it is, but it's up to you to figure out how to get there, or is it really a "route" to something, telling you what steps you have to take to get there?

And as we all know, these separations are somewhat artificial. Will the post office deliver a letter addressed to "Hixie, Google"? Don't we use names as addresses and routes as names? Since one can be used for the other, are they really different?

They're certainly different in the library and information management world: knowing what a document IS (in caps) is a lot different from knowing where you could find it.

We spent a lot of time on this topic, finally coming up with the decision: the space of Uniform Resource Identifiers (URIs) would be split: there would be Uniform Resource Names ( URNs) and the rest. The rest of these things would be called URLs, "Uniform Resource Locators". URNs have their own requirements [RFC1737], registration procedures, and syntax, but would fit inside the overall URI space: URNs started with "urn:" and every other kind of URI didn't.

Given the ambiguity of the URN/URL divide, that URNs that can be used as locators (using [Dynamic Delegation Discovery System]) and URLs can and are used as names without any "resolution" protocol in mind, maybe trying to call them different things was hopeless. URL, URI, IRI, I'm not a stickler, at least in prose. (In formal specifications, that's another story.)

Do Resources Exist?

Through all of this, the idea of a "resource" is still one of the Great Mysteries of the web. What is a resource? How can you tell whether two resources are the same resource? Are there different kinds of resources (Information Resources vs. non-Information Resources)?

This Great Mystery has eluded being pinned down since the beginning, to the point where, well, I thought it was fitting to think of Resources as Angels and URIs as Pins.

The W3C TAG (without me) spent quite a bit of time discussing this and related issues. TAG httpRange-14 addressed "what is the range of the HTTP function". Mathematically, a function f is a mapping from one set (the domain) into another set (the range). That is, if you write f(x) = y, x is in the domain, y is in the range, and f is the mapping. Presumably, for "f" standards for the act of "locating" done by the HTTP protocol, while the domain (what x is chosen from) is the set of "all URIs", while the range is the set(?) of all "resources".

Of course, this kind of assumes that you know what these things are. But what exactly is a "resource" and what does it mean to "identify" one?

It's interesting to look at the philosophy of language; if go back to Frege and the problem of Reference, you might ask whether if you put "the morning star" and "the evening star" as two addresses for "Venus", would it make sense to ask whether these "locators" identified the "same" resource? There's only one Venus, right? So you' could have many Pins in the single Angel.

Related questions come up when you ask what is the Resource identified by a single URI, just thinking about the boundaries: is "http://larry.masinter.net" an identifier for me or for my web page? Does it refer to the page at the current moment, or whenever you get around to looking at it? Does it identify just the HTML of that page, the HTML and its images, that page and everything on the whole site I might reference?  The answer to most of these questions might be "yes"; that is, any kind of reference is naturally ambiguous. There are many Resources that might be identified by a single URI, and many Angels can dance on the point [!] of a single Pin.

"Resource" vs. "Representation"

Let's restrict the range of things we're talking about at the moment to URLs that start with "http:" or "ftp:" or a few others, and even ones that are typically used on the web in hyperlinked applications.

I click on a link, and my computer asks some other computer something and gets something back. What do I get? Is it "the resource" that was identified by that URL? It usually has something to do with that resource, but of course, when you press hard, there are URLs that don't return anything (you just POST to them, for example) and URLs that can return more than one thing, depending on the situation (using content negotiation or knowing something about it.)

In another bike shed moment, the decision was to try to separate out the notion of "resource" and "representation".

In a lot of situations, the difference between a "file" and "the name of the file plus the location of the file plus the contents of the file plus any file system data about the file" .... well, they're the same. So if you think of URLs like file names and clicking on a link like accessing a file, the "resource" and the "representation" don't really matter.

But for those for whom the distinction does matter, the idea of just tossing the distinction, well, it's annoying.

"Hyperlinks vs. Ontologies"

URLs are used extensively in hyperlinked applications--not just HTML, but other formats and protocols too (Flash, PDF, Silverlight, SVG, etc.). Hyperlinked applications such as web browsers use URLs to identify which network resource should be contacted during the interaction with the hypertext and how that contact is to be made.

But URLs have also been used for other purposes. For example,

• XML applications use URIs in xmlns attributes to identify namespaces.
• Semantic Web applications use URIs to denote concepts. I use "denote" as term related to, but different from, "identify".
• Metadata applications use URLs to identify both the data that the metadata is about.

At one time, I was trying to argue that the notion of a "concept" doesn't really form a "set" in the mathematical sense, because there wasn't a clear idea of "equality".

(more to come.... about model theory, internationalization and the discussions around IRI, the difference between "the presentation of an IRI" and "an IRI", the process of registering new URI schemes, other systems such as XRI and DOI and Handle systems, and...

... a truly universal "tdb" scheme, which can be used to identify anything. Well, anything you can think of. Well, anything you can think of and write down what you're thinking.)

Masinter and Web Standards, Oh My

w3c,html,html5,masinter,adobe,hooey,conspiracy,standards,google,apple

There's been so much hooey flung around that it's hard to know where to start. This is a little haphazard, so I might reorganize some of the topics later.

Not me

Just in case you weren't watching, there was an enormous flap, started by a completely astounding blog post that somehow "Adobe is blocking HTML5!" and reference to some mystery, when nothing had ever been blocked. If you want to read about this and the nonsense around it, it's easy to find. Not sure how much of the muck-racking I need to repeat here. If you don't know what I'm talking about, let me know and I can point you to it.

Secret mailing lists

In the great tradition of conspiracy theories, it was claimed that there was a secret mailing list on which objections were being discussed? What secret mailing list was everyone talking about? Who subscribes to it? What is its charter? What topics are discussed on it? Who is the chair? How do decisions get made in it? (Post answers in blog comment! T-shirt to first to send correct answers.)

Transparency in Standards

Is it OK with everyone that the working group charter says one thing and the truth is something else? What I was asking for was transparency. I said they were not in scope for the current charter. And now we have an updated charter, at least. The W3C HTML WG charter still needs "annotation" to make it truthful clearer about communication (how many mailing lists and bugzilla databases do you need to watch to know what's going on?), participation (how many invited experts or members from a single company are there, in "good standing", even though they never actually participate?), and decision policy (there's a separate HTML WG only Decision Policy, with its own bugzilla database, in a Nomic twist.)

Updating the charter to say these things were in scope was always a way of bringing them into scope. That W3C wanted to save face and call it an "annotation" and skip the normal W3C rechartering process -- well, so many exceptions were made for HTML in the first place, that's fine.

What makes a "standard" process "open" isn't just "everyone can read the mailing list". Trying to follow the HTML standard requires withstanding a "denial of service" attack; thousands of emails, messages, posts, edits to track every single month. No one person can really follow what's going on..

Organizational scope and modularity

Well, this is a longer topic, and there are a lot of others who are blogging or discussing this, and I've blogged about it too. Short answer is: big committee, big spec, big mess. Splitting things up to minimize interactions between pieces is what distinguishes "architecture" from "hack". Anyone with serious experience building large systems should know this.

Masinter as Adobe's representative

I do work for Adobe. I get paid by them. And I do work on Standards now as my job. So you might think that, well, if I say something, Adobe is saying it?  I suppose I need to start putting more disclaimers on my email.

My work at Adobe has been mainly in the Advanced Technology Group working on a pretty wide variety of topics (content management, archiving, layout) and then in the Creative Solutions Business Unit (focus on workflow and metadata for video and timed media.) I kept up my standards affiliations because I thought it was important and I had some history, but really only started doing standards full-time in late 2008.

Other people and their affiliations

The idea that I am Adobe's Larry Masinter, but Hixie is Hixie and diveintomark (or just 'Mark' on some blogs) aren't somehow representing Google... or that Maciej isn't representing Apple? I guess I'm just jealous. Why do they get a free pass? I'm going back to using LMM@acm.org as my posting address, not to hide my affiliation but to make it clearer when I'm speaking for myself. Which leads me to try to explain why you should believe that.

My history in standards

I've worked on web standards but also the processes around developing them for long before I joined Adobe; I chaired the URI working group, and the HTTP working group for many years, and also participated significantly in the original development of HTML. Back in '93, I convinced everyone to use MIME in HTTP to allow extensibility (HTML wasn't the only document format then, and isn't now) and interoperability between the web and other Internet applications. I spent many years trying to bring stability, extensibility, architecture, internationalization, and security into the web platform. I not only worked on the web technically, but also worked on the standards processes. Chairing the URI working group and the HTTP working group while the browser vendors were trying to kill each other in the marketplace was a great career success for me: to (usually) get people to leave their partisan bickering outside the process. I was on the W3C Advisory Board and quite active in developing the W3C process document (including the little-known provision that the W3C Director does *not* have final authority; almost all Director decisions can be appealed, at least if people know about them.)

I had brought to IETF and W3C previous experience in standards work in ANSI X3J13. I had spent a lot of time in that standards effort developing the essentials of an "issue" as a resolution process (documented in a 1988 paper), and drove HTTP using it; as a process, it spread through much of IETF and W3C. Then, as now, the separation of understanding of the 'problem' from the proposed 'solution' is crucial.

I've worked on scores (more than 20 and probably more than 40) different working group charters. I think I really understand why working groups have charters, how the words in a charter are chosen carefully, and why it's important to keep things in scope.  Is that being nit-picky? Yes, but that's what I do. And, I claim, it's what makes good standards: follow process, pay attention to details.

My perspective is that what makes a good standard is very different than what makes a good implementation guide. Many otherwise good software engineers (even those with a great deal of experience) really don't see it, since their experience and intuitions have served them well in building complex software systems, or leading open source projects.

In the late 90s, I was on the tutorial circuit focusing on Web Standards, and put together several tutorials about the web, the web standards process, how to get involved, and what was and wasn't important about standards. These are linked from my home page, but I'll drag some of them out and blog about what I think is still true and what's changed in the intervening decade.

Tweets and Blogs Oh My

OK, so, there's still a lot of trash talk around the Internet. One poster said:

"Adobe's Larry Masinter should get out of the game. He did some great things in his career, but now he is just a well-paid Stanford-PhD-bearing obstructionist. Please retire and let the world move on. HTML5 is an amazing step forward as an open platform for the web, barring M$ and Adobe FUD-slinging."

Thanks for the "great things"! I try to be modest about my accomplishments, really! And I don't think credentials are worth much, although I do value knowledge and understanding, and I think there really is a "science" to "computer science" and not just a bunch of hacks. If I retired, though, I'd miss all this fun! Frankly, though, I don't think I was the one slinging any FUD at all, you know? Look at it.

More?

This is pretty haphazard, but it will do for now. I'll expand on things if you ask, honest. Comment here or by email; LMM@acm.org.

Users and Standards

In a comment an an earlier blog post, I was asked about users and the effect of different kinds of standards on users -- I had talked about the effect of standards on implementors but not about end users. The commenter made some claims about what end users wanted, with reference (presumably) to users of browsers.

This is hard, so I might take a couple of whacks at it, but here's one pass....

What Users Want


My main point is that what users want varies a lot, and that making a standard that was good for "users" involves making tradeoffs.

• Even a single user wants different and somewhat contradictory things. A single user wants both innovation and stability -- for new features, but also for old features to continue to work somehow. Just optimizing that alone involves a lot of tradeoffs.

• Second, there are different categories or roles of users. I'm a writer-user publishing this blog, and you (dear reader) are a reader-user. Although both roles may desire communication, sometimes the desires of the writer and the reader conflict. For example, writers often want readers to also see ads, while readers would just as soon skip the ads. To benefit both the needs and wants of both roles users requires some trade-offs.

• Third, even within a single role, there are variations. For example, among writer-users, some care about ads, some care about exact presentation, some care only about readers who have particular technology, or are running the latest software. Some care about users with accessibility needs and, unfortunately, others don't.

• Fourth, there are other applications, software, and work-flows those users might engage in (for example, copying web pages into email, reposting them in news feeds) and the user needs and wants may vary based on interoperability needs outside of the context of the user role in this individual action.

• Fifth, there are vendors who have different subsets of users who are important to them, based on their business model, and what other activities those vendors also support. As the business model varies (e.g., between selling advertising linked with uniquely provided services, closed hardware platforms combined with content monetization, or tooling and infrastructure), this influences which users, workflows, roles, and associated compatibility issues are important to the vendors who are implementing the standards. And vendors don't want impossible implementation goals in order to meet their user's needs. While you might not care about the desires of the vendors, motivating them is what causes standards to be implemented.
• Finally, it's important to think not only about needs now but also in the future. Do the standards allow sufficient evolution that new reader technology will work well with old content, while old readers continue to work with new content? Has the standard provided for a clean path for future extensibility?

What makes good standards for those users?

The standards, the specifications, and the discussions around them require a very difficult balance between all of these ultimately user-driven factors.

Given all of this, a standard for the web should try to meet all these needs, not just some. While some end users indeed want "a browser that work on any web site they pick", that would also mean supporting ActiveX, Java, QuickTime, and the five-letter F word.

Those who are designing and coding web sites have complex needs (some motivated by "money"), butthe link to technical requirements is not very simple.

A publisher can't depend on anything being broadly implemented just because some spec says a browser MUST do something. A MUST in a specification isn't a law; it provides no push. The only role a MUST in standard actually has is to provide a check-box for implementations; if the vendor of the implementation says "I implement standard X", they mean, among other things, "I follow every MUST in the spec, and I also follow every SHOULD except when I have a good reason not to, which I can explain". That's it. That's all the standard really does, is give you something to measure against.


A good standard is one where MUST and SHOULD are used as sparingly as possible; only those things that are really necessary to accomplish interoperability in the simple sense that the roles (readers and writers, intermediaries, editors, transformers) can function with expected results. Not necessarily the same results, but within the range of expectation.

HTML5 "experiment" and W3C Priorities

HTML5 W3C

in yet another astounding revelation, here's another post, again to the W3C secret Member-Only w3c-ac-forum cabal's list. Since this is my blog, I can repost all this historical stuff, right? Of course, this was a while ago, in the context of W3C budget discussions, and before there was even the (buggy!) HTML working group "Decision Policy".

---

From: Larry Masinter <masinter@adobe.com>
Date: Thu, 25 Sep 2008 15:18:29 -0700
To: "w3c-ac-forum@w3.org"

My personal observation is that the current HTML5 process combines the worst elements of the IETF process and the W3C process. From the IETF, there is the chaos of an open mailing list, wide ranging comments and free participation, but without the "adult supervision" that the IETF supplies in the form of the Internet Engineering Steering Group (IESG) and the area directors. From the W3C, there is the overhead and cost of W3C activity management and staff, and a process that assumes that voting members actually have a say in the final specification, but without any actual responsibility or response to normal W3C safeguards and cross-checks.

Recall the original history of HTML standardization: it started in the IETF, but succumbed there to an irresolvable debate between "inline font tags" vs "style sheets". The move to W3C was to provide a more structured environment, and strong enough management to resolve the ongoing positioning by Netscape and Microsoft.

At this point, the players have changed and there are more of them, but the jockeying for position is ongoing, but W3C seems to have abdicated any responsibility for ensuring that comments get answered, that questions are addressed on their technical merits, that reasonable voices are considered and points of view addressed, even when they differ from the point of view of the current editor of the document.

The W3C process document was built to safeguard the process. If there is an 'experiment' and the experiment is going awry, then the experiment shouldn't continue in its current form.

My basic premise for W3C prioritization is that the expansion of W3C activities outside the core of the web, in an attempt to gather more members, has basically been counter-productive, because activities have a lifetime beyond the interest of the few incremental members attracted. The basic direction I would suggest is to trim staff and expenses, and refocus the remaining staff on the core fundamentals of the web. Yes, some special interests may leave if their projects are no longer being developed by W3C, but the W3C process has a heavy overhead which was designed for a much narrower scope. Even if the peripheral activities seem like they're self-funding, every new topic stretches the ability of staff, TAG, Advisory Board, and ultimately the Director to understand and manage the process.

HTML5 and W3C Focus (10/2008)

HTML5,HTML,W3C,web standards

I sent the email below to the W3C members-only mailing list w3c-ac-forum@w3.org on 14 October 2008, as part of a discussion about HTML management. It might be a little dated, but maybe it will explain a bit where I'm coming from.

Note added 2/28/2010:

By “the expansion of W3C activities outside the core of the web” I did not mean style sheets, video, 2D or 3D graphics, HTTP, URLs and all the various URL schemes, web security, which are all at the core of the web. Web applications too! But of the W3C list of activities and publications, some are pretty far away from the "core of the web" as most know "the web", and even if relevant and visionary, but they're not on the trajectory of "the web" as it is being deployed.

"Leadership is the skill of getting others to follow": get out in front, but not so far in front they can't see you, and certainly not chasing after them with waggling fingers.

---

From: Larry Masinter
To: w3c-ac-forum@w3.org
Subject: HTML5 and W3C Focus
Date: Tue, 14 Oct 2008 23:47:15 -0700

To make some progress on the HTML5 situation, I think it's important to look at the general principles of standards-making, and not get too focused on the specifics of the individuals and their personalities. Certainly, just changing the players without addressing the process issues isn't constructive.

Good standards are hard and take time. Many people are frustrated with the standards process and would like to short-circuit the procedures, especially when the official process yields a specification which doesn't address their needs (as happened with XHTML). Many standards efforts do not succeed because the process of developing the specification ignored the needs of critical constituents in the effort to get "something" soon.

The web has many constituents, not just browser implementors. These include end users who depend on the web functioning smoothly and interoperably, but also authors, makers of authoring tools, dynamic web content generation tools, search engines, machine translation services, content management systems, advertisers, IT managers concerned with web security, publishers, government agencies wanting to publish information on the web that is universally accessible, publishers supporting multi-lingual information, gateways and translators to and from web content to print, etc., etc.

The design of HTML matters to each of those constituents, and changes that favor one category may adversely impact another; for example, the more expressive something is, the harder it is to analyze or translate.

Any single individual (editor or chair) may be committed to giving everyone a fair hearing, but it is impossible for any one person to comprehend all of the requirements and the impact that any change or addition might have to the web on all of those constituents. It is inevitable that they internalize the requirements of those they talk to the most, depending on their organization and place in it. With a complex, highly structured, and interdependent technology, it is unreasonable to expect that a small set of individuals who mainly represent a subset of one constituent ("browser implementors primarily concerned with new mobile platforms") to fully carry out the analysis and design work without substantial additional review.

Making changes or additions to HTML, and encouraging content creators to use additional features where universal acceptance is not likely is irresponsible, because it fragments the web, and encourages creation of content which only works for some people and not others. The chaos of the browser wars between Microsoft and Netscape was very damaging, and recovery is not yet complete; we should work to avoid a repeat.

Allowing a small specialized design committee to proceed without substantial oversight loses sight of all of the rest for whom the W3C is supposed to serve as guardian of the Web. Additionally, others who are not of the inner circle and who come to the process are at a disadvantage, because it's often difficult to articulate their requirements in a context that is understood by the design committee. Often proposed solutions don't entirely fit and are easy to ignore because the motivation is poorly understood.

Standards processes and standards organizations need staff and mechanisms to ensure that other voices from other constituents are heard clearly, that requirements are exposed and considered, that designs are not just reviewed after the fact, but that review comments are given sufficient discussion to expose the underlying requirements and to understand more clearly whether there is some way of meeting them, even if the offered solution isn't accepted.

In my experience, one of the most challenging tasks in standards-making was to push "proposed solutions" back to "requirements". Very often, someone would make a suggestion for some fix or patch or change they wanted to the specification. They were often unable (or, in some cases, for proprietary reasons, unwilling) to articulate the requirements or needs they were trying to satisfy by the proposed feature. Much of the difficult work was to distill these requirements and prioritize them, make them explicit, and explore alternative solutions.

Transparency in the standards process (e.g., a chart of suggestions ignored by the HTML5 editor) might help a little, but what's needed is a more thorough analysis of the requirements and evaluation of the specification against requirements in a neutral way. Doing so is a distinguishing characteristic which would differentiate an open and consensus driven standards organization from a consortia or a company producing proprietary solutions.

As W3C examines its budget priorities, I believe that the only proper response to both the W3C financial crisis (as well as the dissatisfaction with prominent ongoing activities such as HTML5) is to look harder at the organization's priorities. An effective W3C is one in which W3C can provide technical management. Technical management of a standard involves more than just making sure the meetings are held on time and that there are minutes. The W3C organization needs to provide leadership that reflects its mission statement: Leading the Web to Its Full Potential. The implicit assumption is that it is the full potential for all, not a small subset. The management team, staff, TAG and other important controls of the W3C process should be sufficiently focused not only on the technical aspects of the specifications being developed, but also on the impact the specification has on the broader range of constituencies, even when those constituencies are not directly engaged in the process. The structure of W3C process and technical oversight - director, TAG, staff - have intrinsic limits as to the scope of activities that can be effectively managed.

Many of the other core specifications which underlie the web (beyond HTML) are also in need of maintenance. In the IETF, the HTTP specification is being updated to correct errors and clarify ambiguities, yet this effort has received scant W3C attention. The URI specifications have several areas which need clarification and further standardization work (the "file:" URI comes to mind), yet there is no motivation or effort to fix the potholes - everyone is focused on building bridges, with the hope that some day they might lead somewhere.

I'm calling for more focus of W3C staff on the core specifications which are of critical interest to the broadest constituencies. To do this and stay within budget implies a drastic retrench of the current W3C activities, even at the expense of driving a number of activities outside of the W3C.

Over-specification is anti-competitive

HTML5

If there are 300 implementations of a specification, all different, but you take the 4 "important implementations" and write a specification that is precise enough to cover what those 4 "important implementations" do, exactly, precisely, and normatively require
("MUST") that behavior, then you inevitably wind up of making many of the remaining 296 implementations non-conforming, because the MUST requirements are too stringent.
The process then favors the 4 "important implementations" over the 296 other ones, and makes it harder for any of them to be offered as compliant implementations.
This is an example of "structural bias", as I wrote about earlier.

This problem is widespread in the HTML specification, and unfortunately really difficult to eliminate.
The example where I explored this in depth was in the calculation of "image.width" and "image.height", where a precise algorithm that required a state transition from:
[image not available, not loaded] to [image available, being loaded]
and then to EITHER [ image available, completely loaded] OR [ image not available, load failed].
HTML5 requires if the image is "available" (whether "being loaded"
or "completely loaded") that both image.width and image.height were both non-zero.
This behavior, I was assured, was necessary because there was some (how much? how often? still deployed?) javascript code that relied on exactly this state transition behavior.
Another implementation, which did not cache image width and height, or which let the cached image.width and height expire, and thus would allow [image available, being loaded] to transition to [image not available, not loaded], but that would be non-compliant with the HTML spec.
This non-compliance is not justified by significant interoperability considerations. It's hard to imagine any reasonable programmer making any such assumptions, and much more likely that the requirement is imaginary. By putting "compatibility" with a few, rare occurrences of badly written software which only works with a few browsers as the primary objective of HTML5, the result is an impenetrable mess.
The same can be said for most of the current HTML spec. It is overly precise, in a way that is anti-competitive, due to the process by which it was written; however, it is not in the business interests of the sponsors of the self-selected "WHATWG" steering committee to change the priorities.
Much was written about the cost of reverse engineering and how somehow this precise definition increased competition by giving other implementors precise guidelines for what to implement, but those arguments don't hold water. The cause of "reverse engineering" is and always has been the willingness of implementors to ignore specifications and add new, proprietary and novel extensions, or to modify behavior in a way that is "embrace and pollute" rather than "embrace and extend". This was the behavior during Browser Wars 1.0 and the behavior continues today.
None of the current implementations of HTML technology were written by first consulting the current specification (because the spec was written following the implementations rather than vice versa) so we have no assurance whatsoever that the current specification is useful for any implementation purpose other than proving that a competitive technology is "non-compliant."