Between Piaget and genetics...

Piaget's Assimilation and Accommodation is a great thing to keep in mind. It forces me to remember that not only do different people have their own realities but to how this may come to pass. Different facts are learned at different times by different people. Some people never learn certain things. Add into this the dimension that people have had different levels of assimilation and accommodation of these facts relative to things that they had learned previously and there are infinite variations on how people can view the world. All of this variety without even adding into the picture how the genetics play into this. This I believe is how monozygotic twins can and do have the differences that they do.

It is humbling to see how many variations that the human brain is capable of creating through just these two things. This forces the realization that it will be impossible to see eye to eye with some people. They have different predispositions based on genetics and then have learned information potentially completely contrary to what I have at several to many points in time. This is why some people can have similar ideals, and others polar opposites of them.