The best examination I know of why laziness is useful is in this blog post by Lennart Augustsson: http://augustss.blogspot.hu/2011/05/mor ... on-in.html It ...
In my first job out of college, I was assigned the task of rewriting the autocomplete feature of a search page. The original code, entombed in a decrepit codebase, was a nauseating monstrosity that ...