Mark always does a great job in his presentations. His speaking style has the ability to make you feel comfortable even with complex and complicated topics.
I really enjoyed the talk, I think that shining the light on the dark days of the FreshBooks codebase and then essentially proving you can build yourself out of it offers a lot of support to refactor side of the refactor vs rewrite debate.
I really enjoyed this talk. Evert was able to clarify some serious misunderstandings I had regard generators. I'm excited about Promises now in PHP and look forward to reading the implementations across the various Promise packages.
Thanks for the talk, I love technical ones like this. It's always great to learn something new at conferences and Evert delivered that for me.