"A look at the past, present and future of web development in Ruby. How does Rails work internally? What is going to happen in Rails 4? What are the plans for Sinatra? Right now, there are at least two replacements for Rack in the makings. But it is the underlying technology used by Rails, Sinatra and nearly any other Ruby web framework out there. Yet, it's the framework authors pushing for the changes. So, what's wrong with Rack? And what does that mean for us as web developers?" -- Actually that's some bad copy/pasta. This talk is not about Rack.