Invention is insufficient.
[This is NOT a paid advertisement.] Ever since I read this I've been meaning to share that there is a tool out there that I've been using for years and should be in every home: the OpenX (http://www.myopenx.com/OpenX.htm). I use it a heck of a lot more than a hammer. :)
Loved reading this - very insightful & thought provoking!