The local media was just discussing a new study released that showed a direct correlation between primate brain size and muscle mass. The larger the brain the less muscle mass. Humans have little muscle mass compared with gorillas but have far larger and more capable brains. If that applies to BF, and we have no reason not to think it does, BF in spite of its huge muscle mass, must have a small brain. Perhaps that explains lack of tool use, no evidence of food storage, and apparent lack of creative skills?