Why don't they think stuff through, or listen to reason?

Not really related to anything atm, but it popped into my head. What's up with people who won't listen to their minds? How do they live with themselves knowing that they're keeping themselves in the darkness?

did i ever tell you...

the definition of insanity?

Would probably have to do with being incapable of self reflection.
Not everyone invented the wheel. Some of us just got dragged along through the centuries.