[sunchild]

"Ruby on Rails adding Jquery, Coffeescript, SASS, and SCSS"

Eh? None of those things that you listed is for emulating state over HTTP. In any case, Rails is supposed to be a "tall" stack – it's supposed to be a highly opinionated framework.

If you want to attack stateful apps in browsers, aren't Sproutcore/Cappuccino better targets?

[dstein]

Using Jquery to do ajax requests and updating part of a web page is emulatimg state over http.

Coffeescript, SASS/SCSS are just examples of making the Rails stack even taller.

I don't have any experience with Sproutcore or Cappuccino but both look like clientside-only frameworks and would only extend the state & stack problems that I already dislike.

[sunchild]

"Using Jquery to do ajax requests and updating part of a web page is emulating state over http."

Only if you use it that way. Also, Sproutcore/Cappuccino are not add-ons to Rails. They're stand-alone client-side frameworks.