Finding the real problem

[This gas cap wrench](http://www.amazon.com/Gas-Cap-Wrench/dp/B000ITD7LM/) solves a problem. [This gas cap](http://www.autosportcatalog.com/index.cfm?fa=p&pid=4044) solves the *real* problem (and it’s cheaper too).

Gotta look for the real problem–it’ll almost always yield the more elegant solution.