There's no case or instance when intelligence is a disadvantage in your environment, it's just not possible. It's like saying having hands and feet as human is disadvantage in some cases.Pat wrote: ↑1 week agoMore evolved for their environment isn't devolution.
Blacks are more evolved for their environment. Low IQ since intelligence isn't needed, and high melanin for the sun to give you another example.
Whether or not having a big brain would be advantageous depends on the environment. A big brain would be counter productive for a jungle tribe living off the jungles natural resources. As some humans still are, and many have done before.
What could happen isn't important and if 1 short necked giraffe was able to survive on scraps on the ground is irrelevant, trends are what's important. Natural selection is about surviving and the animal that's the fittest survivor in the current environment will be the one with the highest probability of continuing his bloodline. That's evolution.
No, actually intelligence will be an advantage in nearly ANY environment on this planet, the the proof of that is that humans lived almost everywhere, deserts, woods, cities, mountains, caves, etc. And they managed to survive with excellence and without any problems thanks to their intelligence alone. Even in jungle tribes it would be beneficial to be intelligent as intelligent ancient humans used to make weapons to hunt their prey, how is that not an advantage ? Because the cheetah is faster or the lion or stronger ?
If it would be able to survive it would reproduce, but not because of natural selection and attraction mechanisms, but because it's the only giraffe alive. What i'm talking about is the attraction mechanism in female organisms and how they change rapidly. The females are attracted to the male they find fit enough to reproduce with, so it all depends on attraction, that's basically natural selection and "evolution", not what you said. They wouldn't be necessarily attracted the male who lives.
If we have a short (5'3), bald (NW7), fat, ugly (3/10) guy and that guy managed by some miracle to be the only male to survive, would females be suddenly attracted to him because of it ? or would be FORCED to reproduce with him because he's the only male living ?
Natural selection is a selection, a choice you make from many choices, not a forceful option because there're no other options available.