Why Ayn Rand's Psychology is Probably Wrong (or trivial)

Edit: Some have pointed out that I’ve misrepresented Ayn Rand’s position in this post. From what I can tell, they are right. Either way, I still think the argument presented here is interesting and accurate as long as we change the conclusion to ”Psychological egoism is probably wrong (or trivial)” I’ve met a surprising number of people in my life who believe that no one is capable of altruism. These people believe that everyone always acts to further their own interests. »