Pause the baby-photo gawking for a moment and consider the argument that's still valid. There's an interesting reason why it is not entirely possible to separat

Pause the baby-photo gawking for a moment and consider the argument that's still valid. There's an interesting reason why it is not entirely possible to separate content from presentation: one cannot be abstracted from the other. And this is interesting rather than a commonplace because -- mark this closely -- we're still doing something, some useful work, when the HTML and CSS are put in separate files, even when the classes are things like 'span-27'. So what are we doing?