I don't know, maybe type safety? Don't forget about Play's truly excellent form generation/validation, and yes, raw speed of jvm byte code. Rails truly (DHH)

I don't know, maybe type safety? Don't forget about Play's truly excellent form generation/validation, and yes, raw speed of jvm byte code. Rails truly (DHH) made a blog post on why they switched to generating html server-side: http://37signals.com/svn/posts/3112-how-basecamp-next-got-to-be-so-damn-fast-without-using-much-client-side-ui http://37signals.com/svn/posts/3112-how-basecamp-next-got-to...