His enthusiasm is truly contagious, somewhat reminiscent of how excited Feynman could make you feel about science.
Yes, i was lucky enough to be in the audience at St Andrews in about 1986 when he came to talk to us about parallel combinator reduction, G-machines and Alice.
Amazing enthusiasm and application. Amazing guy.
He was my professor at university, came in one day with shirt, tie and sandals. Took in a deep breath, and shouted it's a beautiful sunny day today.
Watch something with Clifford Stoll in it. His enthusiasm is also incredible.