It's a myth.
No one is ever going to show you how it's done.
The only way to find out how it's done is to actually do it.
Universities won't show you how to do it.
Your boss won't show you how to do it.
No one will.
And if you're waiting for people to show you how to do it you're probably going to wait your life away.
Because most people have zero interest in showing you what you want to know.
People will mostly show you what they want you to know.
Which is rarely the stuff that you want to know.
So whatever it is you want to know how it's done, you've gotta do it.
Because that's the only way to learn how it's done...