I'll refer to Nutter on this one. Refinements appear to be a method caching nightmare.

http://blog.headius.com/2012/11/refining-ruby.html

Those concerns voiced with 2.0's refinements before release were why they were marked as experimental, and were the driving force behind the changes made to refinements between 2.0 and 2.1.

On the 2.1, non-experimental version, he has said: "What we’re going to have as refinements in 2.1 is a paired down version that I think still provides the bulk of the functionality people wanted out of the feature without most of the pain that I was concerned about originally."

http://rubyrogues.com/124-rr-jruby-with-charlie-nutter/

2.1 changes how the method cache works. It is now hierarchical as opposed to the old global cache.

The administration has threatened to veto a number of bills and followed up by signing the bill. It is how the administration plays lip service to their concerned constituents.

If I recall, we were also supposed to get a number of days to evaluate a new law before it is signed.

Does the Chrome browser use its own V8 JavaScript engine and WebKit? Or is it sitting on top of Apple's UIWebView?

It's still using Apple's UIWebView unfortunately. https://developers.google.com/chrome/mobile/docs/faq