[romaniv]

No one stops you from doing polling as an enhancement to a working HTML-only version. However, "single-page" has absolutely nothing to do with this, and neither do client-side MVC frameworks. I mean, there are not a prerequisite to do polling, merely your choice.

[ebiester]

Perhaps I misunderstand you. How would you implement the requirements above? How would you move to a detail screen and back in an HTML only solution that, most importantly, does not require rerunning the query each time?

And most importantly, you've now created two code paths, both of which need testing, both of which require maintenance, and one of which (in a web application) will never be used. What's the ROI?

Now, for some domains (say, e-commerce), progressive enhancement is the right way to go. I've done it. For web applications, which are the extension of client-server applications designed for a limited captive audience (employees), I don't see the ROI.