advanced (which we label then cause of there tech) that they pretty much are starting from scratch mentally, something like cavemen with spaceships. something like when they used to fight or kill another caveman just for the right to mate with the woman.

who ever said that alien were mentally challenged. if they have a tech which is far superior to ours, i cannot see your argument here. the greys may seem to lack emotions, but we don't know what they really are yet. if they are another sentient species, or high tech interstellar robotic probes.

well i never said they were mentally challenged, but maybe cause there so advanced that they lose some of the other mental feeling or understandings or even compassion. so basically in my first statement im just picking for an example that they are more like (high tech interstellar robotic probes, like DARKSPACE wrote before) non feeling or caring type of aliens, and definitely not trying to conclude that they are.

its just all hypothetical