It's about somebody initially knowing more about it than you do but eventually you learn a lot about it yourself and practise the skills and techniques that you've been taught.
“Yeah, there was the Flora Plum thing, where I trained for about a month and I had taken a semester off for that, and two weeks prior to filming, the financing collapsed.”
“Anything that is wasted effort represents wasted time. The best management of our time thus becomes linked inseparably with the best utilization of our efforts.”