There's certainly a lot of truth in this (I especially like the duck-typing image), but the example feels like it throws it all away. You can, after all, have a

There's certainly a lot of truth in this (I especially like the duck-typing image), but the example feels like it throws it all away. You can, after all, have a _super_ fast and simple asset pipeline by keeping things...simple (to say nothing of skipping it entirely); having CoffeeScript compiling to JavaScript is not really relevant to either Ruby or Rails.