20 some-odd years ago, when I was a graduate student, I spent about two years building Mac applications using a language called Prograph. You’ve likely never heard of it. I want to explain why I’m still kind of obsessed with it. I’ve spent a lot of the intervening 20 years explaining to people why it was great. I’ve I’ve been capable of delivering this as a lightning talk at the drop of a hat at any time in the past ten years. Prograph was a purely visual language — they calle...