## Examples of tools for the craft of computer programming. "There's a guitar player, a harp player, a double-bass player, all holding up their blisters. Imagine if you downloaded a library off the internet... and it gave you blisters! Right? The horror! And yet... every musician has overcome a barrier to entry similar to this." Rich Hickey Design, Composition and Performance ETE Conference 2013 http://www.infoq.com/presentations/Design-Composition-Performance