In Naples, where I am from, if you work in a bar you're not allowed to touch the espresso machine unless you have worked there for at least 1 year. Maybe, only

In Naples, where I am from, if you work in a bar you're not allowed to touch the espresso machine unless you have worked there for at least 1 year. Maybe, only then, you could start asking questions about how to use it. So, I agree, you don't learn how to use those things unless you have worked with them.