Your statement already fails at the engine-brain analogy. Furthermore the brain controls muscle fibers. More and larger muscles means more muscle fibers to be c

Your statement already fails at the engine-brain analogy. Furthermore the brain controls muscle fibers. More and larger muscles means more muscle fibers to be connected to the brain. Also brain size and body mass simply correlate. [1] 1: https://en.wikipedia.org/wiki/Brain%E2%80%93body_mass_ratio#/media/File:Brain-body_mass_ratio_for_some_animals_diagram.svg https://en.wikipedia.org/wiki/Brain%E2%80%93body_mass_ratio#...