Right but what does Hi add? Do you say bye at the end of the day? Some people do. I think its weird but some people do it. So at what level of saturation does

Right but what does Hi add? Do you say bye at the end of the day? Some people do. I think its weird but some people do it. So at what level of saturation does some silly social convention like saying hi being required before sending an additional message become the expectation vs being something some people do and some people dont?