[otakucode]

I suffer no illusions that I am myself immune to any of the common pitfalls of being human. I imagine if you shared where you live now, either your community has learned to resist the tendency I describe (which I am guessing you misunderstood, that may be mostly my fault as I didn't go very deeply into it) or else they simply express it in different areas, perhaps demonizing the microwaves of wifi or the evils of certain chemical compounds and their tendency to give people 'unearned' happiness, etc.

I am curious, though... how is saying that humans have a certain tendency an illustration of categorizing things in a binary manner?

I would suggest you make fewer assumptions about the people you're having discussions with. You don't seem to be skilled at sussing out at least my own background. And of course the world is 'less fully specified than [I] imagine' or how you believe I imagine it. That's one of the reasons I studied philosophy, and why I continue to study different cultures, history, and current events. Even the most primitive cultures center their thinking around categorizing things, and they begin with two categories, then split them from there. It's practically the essence of human reason and even pattern recognition.