Why doesn't jquery ui care about html fed in by ajax?

Why doesn't jquery ui care about html fed in by ajax?

With more, and more stuff being pushed through $.ajax why doesn't jquery ui offer demonstration solutions for if you're working with $.ajax?

I am doing a 2 hour speech ( "PJAX driven  architecture") that even includes the solutions for the bugs I found and solutions I've discovered for the problems on top of the other stuff (frontend to backend) you should know about when developing for PJAX that I can cover in 2 hours, so if necessary I can do some minor consulting on the improvements to the UI site.