I asked this question because I was a little bit frustrated with one page in my app which rendered in 800ms. 100ms was db time, the rest it was Ruby.

Sure, the answers won't help to solve my _specific_ problem. However in general I like to known how things work. It is not enough for me to read ordinary info about Ruby symbols. I have to read Ruby source code to understand them better (1) Thanks to this I understand Ruby symbols gc issue, a new feature of Ruby 2.2

Even more important is _intuition_ one can build reading the answers. Intuition about languages in general. I really like duck typing languages. Sometimes I need raw performance. So should I plan migration to statically typed languages (Java, Scala)? Or is it better to invest my time into learning Dart? Does Dart have _potential_ to solve my specific requirements?

As a software architect I have to predict a future a bit. And I must say that nostrademons answer helped me to learn something new today.

1) 2011 http://stackoverflow.com/a/4879142/3315