The way evolution works is that offspring might suffer mutations and not be 100% a copy of their parents DNA. As such, for any concrete definition of chicken there was a non-chicken that put a chicken egg.
There’s no argument for the chicken first, because a chicken needs to come from a chicken egg, but a chicken egg does not need to come from a chicken.
It’s the egg.
The way evolution works is that offspring might suffer mutations and not be 100% a copy of their parents DNA. As such, for any concrete definition of chicken there was a non-chicken that put a chicken egg.
There’s no argument for the chicken first, because a chicken needs to come from a chicken egg, but a chicken egg does not need to come from a chicken.