And the canonical source — 'Much to my surprise, only a few days later, Dan Ingalls showed me the scheme working on the NOVA. He had coded it up (in BASIC!), a

And the canonical source — 'Much to my surprise, only a few days later, Dan Ingalls showed me the scheme working on the NOVA. He had coded it up (in BASIC!), added a lot of details, such as a token scanner, a list maker, and the like, and there it was -- running. As he like to say: "You just do it and it's done."' "The Early History of Smalltalk" ACM SIGPLAN Notices, Volume 28, Issue 3, March 1993 https://dl.acm.org/doi/pdf/10.1145/234286.1057828 https://dl.acm.org/doi/pdf/10.1145/234286.1057828