This is so true. You really don't realize how good people are at top of a given industry because of how easy they make it look.

As a climber, when watching the world cup climbers, you see what they do as impressive but you don't realize what they have to be able to do to even reach that point in the first place.

Most world class climbers can hold up themselves plus their entire body weight on 1/4 to 1/2 inch rungs with their fingertips and many can do one finger pull ups. Yes, one finger! Not one finger each hand, one single finger...

The final result you see is never a good indication of how capable the individual is behind the scenes.