Well, that's already 30 minutes instead of 30 seconds.
And that's without taking what sibling poster said: sometimes people take 1h, 2h, 1 day to reply you on Slack.
With face to face communication you convey more than "the message".
This comes from personal experience: dealing with tech people with Slack-only communication is fine. Dealing with non-tech people is much different.
For example, I just RIGHT NOW have to ask a Salesperson about whether a feature is ready to go into prod. I can just walk 10 meters to their desk and get an answer in 5 secs. OR I can write to them in Slack on email and get an answer Monday, because they have 20 unread Slack messages and 500 unread e-mails.
You might call this "a bother" to them. To this Salesperson, which happens to be my buddy: this is how they prefers to work.
And that's without taking what sibling poster said: sometimes people take 1h, 2h, 1 day to reply you on Slack.
With face to face communication you convey more than "the message".
This comes from personal experience: dealing with tech people with Slack-only communication is fine. Dealing with non-tech people is much different.
For example, I just RIGHT NOW have to ask a Salesperson about whether a feature is ready to go into prod. I can just walk 10 meters to their desk and get an answer in 5 secs. OR I can write to them in Slack on email and get an answer Monday, because they have 20 unread Slack messages and 500 unread e-mails.
You might call this "a bother" to them. To this Salesperson, which happens to be my buddy: this is how they prefers to work.