Why is the brain wired to contralateral sides? Decussation in the CNS

The left half of the brain controls the right side, and the right half controls the left side. Why in the world does this happen? Here are a few of the best ideas so far. ----------------- Hello all you big, beautiful brains! Psy vs. Psy is a team project between a behavioral neuroscientist and an industrial/organizational psychologist. For more content on psychology, science, research, and statistics, check out our other videos!