watch in-depth with author and journalist max taibbi live from noon to 3 pm eastern today. >> one thing that was clear is that is utterly boring to understand the biology of the motoric aspects of your behavior. your brain tells your spine, tells your muscles to do something and hooray, you've behaved. what's incredibly complicated is understanding the meaning of the behavior caused in one setting , firing a gun is some appalling act and in another it's an act of life will self-sacrifice. in one sitting putting your hand on top of someone else's is deeply compassionate and then another entity the trail but the challenge for us is to understand the biology of the context of our behaviors and that one was really, really challenging and one thing is weird as you are never going to really understand what's going on if you get into your head that you're going to be able to understand everything that this is the part of the brain or the gene or the hormone or the childhood experience or the evolutionary mechanism that explains everything. cause it doesn't work that way. instead, any behavior