I asked if I could video because it was so cool. He graciously declined, which was a terrible loss for the science of mathematical practice. (Although understandable of course!)
en.wikipedia.org/wiki/Imre_Laka…
![](https://pbs.twimg.com/media/EAMGxC8UEAECPzS.jpg)
"It don't mean a thing if it ain't got that swing."