He said that astronomers figure he must be an exceptional programmer, since he's clearly a mediocre astronomer. While programmers figure he must be an exceptional astronomer, since his programming is strictly middle-of-the-road!
Of course, these days, he's the best dang Klein bottle glass blower in the game. No substitute for finding your niche.
P.S. Cliff, we know you're on HN. Please continue being yourself, it seems like a really great person to be!
And of course, he hires out the manufacturing. That's why he has (an awesome, little) warehouse under his hour full of them. https://www.youtube.com/watch?v=-k3mVnRlQLU