Was chicken born first or egg?

The Science:

* Eggs came first. Eggs existed long before chickens. Dinosaurs laid eggs, and birds evolved from dinosaurs. So, the egg predates the chicken by millions of years.

* The chicken-egg conundrum is a matter of definition. Technically, a chicken egg is an egg laid by a chicken. But, at some point, a bird that wasn't quite a chicken laid an egg that contained a chicken. That egg would be the first chicken egg, but the bird that laid it wasn't quite a chicken yet.

The Philosophical Takeaway:

The chicken-and-egg riddle makes us think about:

* Evolution: The gradual changes that lead to new species.

* Causality: What came first, the cause or the effect?

* Definitions: How we define things can influence our understanding of them.

So, there's no simple answer! It depends on how you define "chicken" and "egg."