4. Natural selection
favored people
who love baby
faces.
People who didn’t
love baby faces
died off.
We’re all
descendants of
baby-face-lovers.
Group 2
5. Natural selection
favored people
who hate rotten
meat.
People who didn’t
hate rotten meat
died off.
We’re all
descendants of
rotten meat haters.
Group 3
6.
7.
8. Natural selection
favored people who
were attracted to
flowers.
People indifferent to
flowers died off.
We’re all
descendants of
flower-lovers.
Why we like flowers