Coquerel’s sifaka (Propithecus coquereli)

Coquerel's sifaka (Propithecus coquereli)_5

Suddenly realized that, because light is made of photons and photons have energy, and almost no substances approach 100% reflectivity, that when light shines on something, it gets just a little bit bigger.

This means that contrary to literature, shadows are not extremely thin. Instead, shadows bore very shallow holes into everything they touch.