Problem
As humans grow from babies to adults, our brains become increasingly less able to repair themselves after brain injury. Though our brains retain an amazing capacity for change, they no longer are able to repair injuries caused by a stroke, head trauma, or neurological disease. Why do you think is? Provide an explanation for why this occurs. Your explanation can be either evolutionary (why hasn't evolution led to humans whose adult brain can repair itself?) or physiological (what important changes might cause this transition from babies to adults?)