Nowadays, a lot of kids still wake up in the middle of the night, frightened that there’s a monster under the bed. This is a memory from millions of years ago.
-- Narrator (“Humans Are Animals” paragraph NA)

Importance: Harari sets forth the argument that fear of monsters is an ingrained memory left over from thousands of years ago. In prehistoric times, children and adults alike had to be hyperaware of their surroundings. If they did not wake up and protect themselves when they heard a strange noise, their mistake might result in their deaths.

It didn’t happen overnight like in a fairy tale, when someone drinks a magic potion and immediately becomes tiny, or when a wizard casts a spell and — shazam! — a prince turns into a frog.
-- Narrator (“Humans are Animals” paragraph NA)

Importance: Harari uses relatable examples when he explains complex concepts. This particular example is used to help children understand the concept of evolution. Changes that are a result...