Challenges: Some Ugly Truths
The challenges of building—and living with—an XML workflow are clear enough. The return on investment is a long-term proposition.
Regardless of the benefits XML may provide, the starting reality is that it represents a very different way of doing things than the one we are familiar with. The Word Processing and Desktop Publishing paradigm, based on the promise of onscreen, WYSIWYG layout, is so dominant as to be practically inescapable. It has proven really hard to get from here to there, no matter how attractive XML might be on paper.
A considerable amount of organizational effort and labour must be expended up front in order to realize the benefits. This is why XML is often referred to as an “investment”: you sink a bunch of time and money up front, and realize the benefits—greater flexibility, multiple output options, searching and indexing, and general futureproofing—later, over the long haul. It is not a short-term return proposition.
And, of course, the returns you are able to realize from your XML investment are commensurate with what you put in up front: fine-grained, semantically rich tagging is going to give you more potential for searchability and recombination than a looser, more general-purpose approach, but it sure costs more. For instance, the Text Encoding Initiative (TEI) is the grand example of pouring enormous amounts of energy into the up-front tagging, with a very open-ended set of possibilities down the line. TEI helpfully defines a level to which most of us do not have to aspire.[5]
But understanding this on a theoretical level is only part of the challenge. There are many practical issues that must be addressed. Software and labour are two of the most critical. How do you get the content into XML in the first place? Unfortunately, despite two decades of people doing SGML and XML, this remains an ugly question.
Gary Edwards on 09 Aug 11Great chart and HTM5 App development advice from pinch/zoom developer Brian Fling! excerpt: In a post on pinch/zoom's blog Swipe, Fling discusses the "Anatomy of a HTML5 Mobile App" and what developers will need to get started, what the pitfalls are and why HTML5 is so difficult. HTML5 is a lot like HTML, just more advanced. Fling says that "if you know HTML, then chances are you'll understand what's new in HTML5 in under an hour." Yet, he also says that HTML5 is almost nothing without Javascript and CSS. Device detection, offline data, Javascript tools, testing, debugging and themes are issues that need to be resolved with the tools at hand. One of the big challenges that developers face is the need to fully comprehend Javascript. That starts from the most basic of codes on up. Fling says that many developers cannot write Javascript without the aid of frameworks like Prototype, MooTools, jQuery or Scriptaculous. That would not be so much of a problem if all an application consisted of was functionality and theme, but the data and multiple device requirements of apps and working with the HTML5 code means that troubleshooting a Web application can be extremely difficult if a developer does not know what to look for in Javascript. Fling breaks down the three parts of the Javascript stack that is required in building HTML5 apps - hybrid, core and device scripts. Then there is CSS. Fling likens CSS to the make, model, interior and attention to detail of a car. "Javascript definitely influences our experience as well, but they are the machinations out of view," Fling wrote. "We absolutely need it to be there, but as any Top Gear fan can tell you - power under the hood doesn't always equal a powerful experience." So, HTML5 can get the job. But can it do the job? Fling says yes, but with these caveats:
