http://www.raphkoster.com/2006/02/14/shaping-games/
'Our use of metrics in the game industry is nigh on nonexistent. We know close to nothing about how exactly people play our games. Despite the fact that we play on connected computers, running software that is full of event triggers that could be datamined, we still playtest by locking a few dozen people in a room and asking them what they think. Regarded in that fashion, it’s simply astounding that the games are working at all.'
