I believe Darwin suggested that lungs in lungfish evolved from swim bladders. Nowadays biologists believe it happened the other way 'round.
But I have to agree that it’s probably useless to debate evolution with someone who doesn’t understand that we’ve all been evolving for exactly the same length of time.
It was silly because it takes an awfully big leap to go from “bear swimming with mouth open” to “creature as large as a whale”. He was not arguing that whales came from land-bound ancestors (which would have been true enough), but rather speculating that the action that the bears were performing could eventually translate to a large whale-like creature. Upon being confronted with criticism on this example, he agreed that such speculation was rather unwarranted, and withdrew the example.
Had he simply stated that “given enough time, a creature such as a bear might become more aquatic, leading to a whale-like creature”, his example would have been fine. It was the mouth thing that ruined it.
actually it is the mouth thing that makes it for me. I can see another Kipling “Just So” story in the making [e.g. elephants got long noses because one got pulled by a crocodile etc]
As far as I know, lungs developed from an outpocketing of the oesophagus.
I believe the OP may have given up a way before we did.
Nope, still haven’t given up.
Just to update you all, he conceded. And not with an all-out meltdown, either. Pretty calm, and almost rational. He’s still a white supremacist, but his heart doesn’t seem to be in it any more.
Congratulations and well done! Buy yourself a beer on my behalf.
That’d be a little hard, seeing as I’m 16.
It’d have to be a root beer then 
Wow. There’s hope for the future.
Great job!