If I wasn't seen as a weirdo because of it, I'd have an extra arm for utility.
More brain =\= smarter
More legs... What.
More eyes can't be processed by your brain
More sexual organs are useless
More hearts useless
Lungs useless
Liver, kidney, pancreas, and vocal chords are understandable.
English
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Technically, smaller brains are more efficient to a point.
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That's really good thinking. (SORRY FOR EXTREMELY LATE REPLY!)