[Dan Day]

Time to start a pool on when World Nut Daily runs its first article touting perpetual motion machines

Too late -- they already did, although I'd have to go digging around to find it.

[PatrickHenry]

Very well done! And now a warning. Whenever one of the hard-core creationists finds himself totally rebutted, the usual tactic is to provoke a flame war, hit the "abuse" button when you respond with vigor, and eventually get the whole thread deleted. That's their pattern. I suggest that you resist being goaded into anything even remotely like a flame war. You've won already. Now just relax and let them squirm.

[balrog666]

Nice post. it would be nice to hope it does some good...

Also, you can add snakes to the egg-laying/live-young side as well as sharks. I'm sure there are other such groups.

I would add that the monotremes show an obvious (and, generally, bypassed) method of nuturing young between the egg-laying and placental-mammal stages as they include both egg laying and an external development pouch. And marsupials then add an internal embryo instead of egg laying. Obviously, evolutionary history has tried several methods and we extant species are the most robust survivors.