I get the opportunity to talk with a pro today:

"Pro": hey do you know how to use tool X?

Me: well I've used it sometimes for simple stuff but I've always wanted to learn more advanced stuff.

"Pro": let me show you
*repeats the basics that are available in every single online tutorial and are tbh pretty obvious*

Me: yeah I know that but how do you use function A with option B under circumstance C? (Because I've encountered that recently)

"Pro": Oh... emm... I don't know. I don't think you'll ever need that use case tho