User blog comment:GeorgePowell/How do you think Mass Effect 3 will end?/@comment-2250460-20110704032909/@comment-114.74.149.55-20110708041546

Ok, lets ignore the fact that human originated from Africa and spread to Europe and Asia during the Ice Age, while Smilodon originated from South America and spread to North America once the land bridge was formed. No offence to the Native Americans, but they migrated from Asia to America quite late in the Ice age and moved down from Canada slowly. By that point in history, the Smilodon were already in trouble. And as much as it pains me to say the likelihood that humans would WANT TO FIGHT GIANT BIG TEETHED CATS is very low. I mean, why? We were not jerks looking for a fight at that point, least of all with a something that could kill us in a second if it felt like it. We were more likely scavengers for Smilodon's last meal, as well as predators in our own right. Smilodon died out for other reasons, mostly a decline in herd animals that they could hunt. They disappeared from South America and only a few survived in North America. Bison are too big and powerful to be hunted often and yes compotation with humans would have made it irritating, but the Native Americans never over-hunted the bison. We couldn’t really over-hunt them without the invention of the revolver and rifle.

The lizard i have little knowledge of, so it’s not my place to make a comment. But i would like to point out at the point in our history we were little more then intelligent animals (not that we aren't still animals). We hunted in packs and ate what we killed. We didn’t hunt for sport. If you really wish to push this "humans are the greatest evil" indulgence then look at the point in history when we moved from being a part of the ecosystem to an established culture. Just remember extinction is not excluded to acts of human intervention, having been around a lot longer. There are other possibilities. Extinction is necessary for mutations to thrive and evolution to progress. We should stop it when we feel we can, but it is not like death was born when humans showed up.