The negative cost of Lewis and Clark entering the Garden of Eden is that later expeditions regardless of what they were intended to do later expeditions did not deal with the native peoples with the intelligence with the almost kindly resolve that Lewis and Clark did.
I love my daughter but she had me on couscous and fixed me pastas and made me eat oatmeal every morning and what else turkey burgers turkey bacon and that kind of stuff. So she wants her dad to live a long time and I do too.