In LAYman's terms...

Q: Professor Harv, what came first, the chicken or the egg ?

A: Firstly, let me just say you can drop the "professor"; we're all peers on AskHarv (albeit some of us are peers with an intelligence that surpasses his readers').

As for the age-old question regarding the chicken or the egg, the answer is simpler than you might think.

All life-forms on this planet were originally sent down from space in small egg-shaped capsules, from a distant planet called Galaxatron where they were constructed on one of the planet's many production lines. To the Galaxatronics, these "life-forms" are considered household appliances, with no more importance than a toaster has to us.

The factories on Galaxatron have a 0.000000062% rate of product failure, and anything that the QA team detects as faulty is ejected into space. Sometimes these faulty products end up crashing into Earth and the resulting product starts an entirely new species.

So it's the chicken.