Will HTML 5 validation be worth the candle?

Question

It\'s widely considered that the best reason to validate one\'s HTML is to ensure that all browsers will treat it consistently and predictably.

The HTML 5 draft, h

Answer 1

Given this, does it make any sense to limit ones HTML 5 to that which will validate, and what practical benefit will we get from doing so?

Yes, of course. You forget that the future is not fixed. In particular, you implicitly assume that HTML 5 specs will never change, and never deprecate any features. This, of course, only cements the status quo. It is definitely desirable to remove support for some features in long term, to make it easier for new developments to take place (in particular if these might conflict each other).

There may be no immediate benefit in producing valid HTML 5 (except that it still makes validation and thus development easier). But there may be a long-range benefit if most websites improve in quality because it makes moving on beyond the current technologies and standards much easier.