Quote:Natural selection is random.
no, mutation is random. selection is whatever's leftover. it's called "selection" because survival is the determining factor- factor, not random.
Quote:Sometimes the 'better adapted' critter survives.
every single time.
Quote:Sometimes it doesn't.
wrong.
Quote:Sometimes a 'better adapted' species gets wiped out, leaving less evolved species to inherit it's habitat.
that never happens to an entire species. if it does, it wasn't better adapted. period.
Quote:Or to put it plainly 'Better adapted species survive, except when they don't.'
that's a nice story you wrote. here's the one that actually has something to do with what we're talking about:
"better adapted" is not constant. the environment changes, what is "better adapted" to that environment also changes.
plants develop ways to fight off being eaten, the creatures that eat them adapt, they go back and forth sometimes.
at one point, trees were taking over the earth. they were better adapted. mammals came around and started breathing the oxygen that would have suffocated the plants, and exhaling co2.
but man also started pulling trees down. still, it was better for the trees than overpopulation.
all sorts of things randomly change if an entire species gets wiped out, it wasn't that well suited to the change. it may have been perfectly well adapted to what was there before. trees used to be at the top of the food chain, in a way. at least they could compete with any other life form for resources.
but the ice age wiped out entire species of trees, the ones least suited to climate change.
what was left? the ones better suited.
while adaptability to cold might have been the saving grace last time, next time the determining factor may be how much man is encouraged to plant more of them, which ones are best for furniture and medicine. the environment changes.
what's best adapted to the NEW environment is what stays, and there's a lot of gray area and wiggle room. most species have more than one thing going for them, so to use audio as a metaphor, it's more like second and third harmonics than random white noise.
so to rephrase your pithy remark: evolution is totally random, except basically all the time.
i would love to know how much of this stuff you already know, it could save us a lot of trouble.