I always liked the sluggishness. It made me think every operation through before I did it, so I couldn't just bruteforce results through guesswork. And the gra

I always liked the sluggishness. It made me think every operation through before I did it, so I couldn't just bruteforce results through guesswork. And the graph-drawing process was hypnotic. For some models, you couldn't even cancel drawing once it started so you really had to validate your own inputs. Everything about it forced an abundance of caution and efficiency...two qualities overlooked by so many "engineers" rushing through everything they do today.