[dusklight]

I really urge you to read the book, the first half is a bit slow, but the second half I couldn't put down.

Here's a more succinct way to get (one of) his points across:

http://xkcd.com/605/

My emotional outburst is certainly non-scientific, and should not be taken seriously. But it is equally non-scientific to be blinded by data. A good example would be to reward your programmers based on how many lines of code they check in -- you will find yourself regretting that quite quickly.