I'm more interested in who we classify as people. Remember, the word person comes from persona, meaning an actor's mask.

In 2014 it was discovered that a species of Long-finned pilot whales (a type of dolphin) has more neocortical neurons than humans by a factor of two! The neocortex is an area of the brain associated with language and conscious thought.

Do these dolphins count as people? Should we afford them "human" rights? What about other species?

The pig you eat has the same amount of neurons in her cerebral cortex as your cat and dog put together. The cow, more than all three put together. Are they people?