There are so many meanings of the word reason. I suspect you mean the sense that is like “justification”. Consider, the only reason I have for looking at hacker

There are so many meanings of the word reason. I suspect you mean the sense that is like “justification”. Consider, the only reason I have for looking at hacker news right now, is because I know lots of my peers are as well, though I don’t consider this consciously/rationally. But if my peers (along some dimension) weren’t here, I surely wouldn’t be.