> 3. Big brains don't come from standing upright, whales and dolphins have larger brains
That is a terrible "counterexample" to the idea that it's easier to balance a large brain on top of a spinal column than to support it as it sticks out in front of the animal. Whales are aquatic; every part of their body is supported by the water.
That is a terrible "counterexample" to the idea that it's easier to balance a large brain on top of a spinal column than to support it as it sticks out in front of the animal. Whales are aquatic; every part of their body is supported by the water.