You have to think from the point of view of a person doing their own work, while being pinged by 5 people on slack. It is super annoying because this is what ha

You have to think from the point of view of a person doing their own work, while being pinged by 5 people on slack. It is super annoying because this is what happens: - You're in the flow of working on your thing. - Now, you see a notification. But you decided to continue working but now you have a thing at the back of your head that you have to respond to the message. - Finally you take a break and decide to look at the pending messages, and you see just a hello. So now you have to respond with hello and know that you are going to be interrupted once again, because very likely, the other person is not looking at their slack at this time so they will respond later when you are busy again. It doesn't say, "Don't say hello". It says, "Don't say just hello". Say your greetings but also give a brief overview of the question. Saves everyone time and it isn't any less courteous.