What happens at 38:25? Joe: "This algebra you've made it's a Prolog program you just move a few brackets". And I went "oh my god". From that moment on I was not

What happens at 38:25? Joe: "This algebra you've made it's a Prolog program you just move a few brackets". And I went "oh my god". From that moment on I was not interested in Smalltalk anymore. Alan: Yeah, nether was I! But...