Or even close to the best in the world at something?
It's hard to even fathom how a mind at that level operates.
There's a board game designer that ranks among the greatest in his field that has ever lived, and I've loved playing his games. Unlike some other jobs where a person creates things, building a board game requires a constant influx of new people to play a game and provide feedback during the creation process. A board game will fail if it isn't hitting the right notes over a large number of groups that play it.
Even the best in the world need help.
I reached out to this designer, told him I've loved playing his games, and if I could ever return the favor for everything he has provided, I would be happy to get my friends together and playtest any of his games.
He told me he was grateful for any help I could provide, and offered to drive to my house so he could walk through the game in-person. I made good on my offer, provided the best help I could, and it was an experience I'll never forget.
Even the best in the world need help.