Earlier quoted context omitted.
Ha! I didn't know the klien bottle guy was the accounting error guy. That's very cool. Googled him there and he's listed as an astronomer. But the astronomers consider him a computer guy ;)
You should read his book! He discusses this in the first chapter. He helped (or maybe solely) design the lens at W. M. Keck observatory, and you can see him on Numberphile a lot.
Brilliant read.