@Lizy - Are you so sure you know what the op was talking about that it made you go on a religious rant? Personally, I have no idea what he's getting at, but I will answer his question:

Question: How do you think, my friends?

Answer: Sometimes with my brain, and sometimes with my mind, but always very carefully.

the world is too big for everyone to be the same. it wouldn't make sense.

Variety is nice: for example, im this way we can know it when we're wrong.

Is that make sense that the environment affects both the physical and cultural of someone or tribes?. I said physical I mean the color of their skins, hairs, etc.

That's good Thuany, It's makes the world more interesting.