We have very philosophical conversations when Cooper is submerged in water, either the bathtub or the pool…
Me: Which came first, the chicken or the egg?
Coop: The egg.
Me: But who laid the egg?
Coop: A chicken.
Me: Then the chicken came first?
Me: But where did the chicken come from?
Coop: Nowhere. It dropped from another dimension through a portal.
AGE OLD CONUNDRUM SOLVED.