I think programmers forget that external behavior isn't the only factor in whether two things are similar. Human behavior is determined by internal state of th

I think programmers forget that external behavior isn't the only factor in whether two things are similar. Human behavior is determined by internal state of the actor (i.e. intention, context and frame of mind) and then external behavior. I hope you'll agree that even if there are outward similarities between dolls and action figures, most boys and girls make a distinction between the two (which is a learned behavior). If you swap a child's dolls for action figures, or visa-versa, you don't get identical behavior. There is a cognitive distinction.