You’re much less likely to develop a clue if you have a lot of cash. When you have a lot of cash, you can delude yourself for a very long time and still pay the bills. There’s nothing that will bring realism into your world as quickly as realizing that you’re out of cash. That is a smack of real life that will instill sense in almost anybody.

David in Episode #26 of the 37signals Podcast. Read the transcript or listen to it.