Because, the act of writing down a question --- with the necessary details to state the question precisely --- is often enough to find the answer yourself. Unless it is simple matter of a missing fact. But that is rarely the case in my line of work.
Some businesses have huge depths of technical content to understand that can't all the memorised in a training session. Nothing difficult can. Even knowing who to talk to about an issue is going to be found out via a question.
You get an appointment. Here noone is against appointments, here people discuss the notion of going to ask a doctor in the middle of a surgery a "quick question".
It also
1) forces (or at least encourages) laying the whole thing out in a coherent order
2) leaves a record of both the question and the answer, so that the asker can refer back to it if they forget
3) leaves a record so that if the asker is asking obvious questions, or repeatedly asking the same questions, or failing to formulate their questions in a sane and coherent manner, there is documentation to take to their supervisor, not only to prove it, but to show exactly the shape of the problem, and have a possibility of getting them the kind of help they need
We might have the same access, but rather than dig through 20 medical textbooks, I'll go ask a doctor. Access is a really poor way of thinking about things.
> But 90% of the time someone taps on my shoulder, they want me to think for them. You can do that by yourself. Just send an email.
Why send an email when they're thinking for themselves?