As a developer, I mostly agree with this. But I was talking about that with a friend that works in finance and he thinks just saying “hello” is ok in his contex

As a developer, I mostly agree with this. But I was talking about that with a friend that works in finance and he thinks just saying “hello” is ok in his context. The difference in context is the length of the subsequent conversation. If it is a quick question, with a quick answer, just saying “hello” to start a conversation is a waste of time. But if it is the start of lengthy conversation that is technically async, but actually would be more productive if both parts are online to reply in minutes, just saying hello is useful. Also, polite, since this is closer to a real life conversation. It is the short version of ”Hello, let me know when you are free for a async-but-not-so-much conversation”