Despite many assertions to the contrary, the brain is not "like a computer." Yes, the brain has many electrical connections, just like a computer. But at each point in a computer only a binary decision can be made—yes or no, on or off, 0 or 1. Each point in the brain, each brain cell, contains all the genetic information necessary to reproduce the entire organism. A brain cell is not a switch. It has a memory; it can be subtle. Each brain cell is like a computer. The brain is like a hundred billion computers all connected together. It is impossible to understand because it is too complex. As Emerson Pugh wrote, "If the human brain was so simple that we could understand it, we would be so simple that we couldn't."