How do you know if someone is stupid and ignorant?

Well, just ask them if they are a trump supporter! Just ask them if they are Maga! They may find it to be insulting. They may think it is absolutely not true. But then they are too stupid and ignorant to know that they are stupid and ignorant. They exist at a much lower level of understanding. They are a subspecies of humanoid life forms. There is a variance within human development. And Trump supporters Maga are at the very bottom of human evolutionary development. It's just a fact! They are just stupid ignorant people who are not as developed emotionally mentally and socially. Some of them may actually be highly intelligent but they still lack a higher understanding of life.