####What is a hash?
A semi-famous joke in computer science goes like this:
There are only two hard things is computer science: naming things, cache invalidation, and off by one errors.
In terms of the first diffuculty, naming things, let's think about Hash. What does that bring to mind....breakfast potatoes?..something rockstars in the 1960's smoked in Morrocco?...Twitter hash tags?
Hash is actually short for HashMap...still not very descriptive, Lets see if we can do a bit better.