Like all big changes, I bet it happened for many reasons, and which one is considered the primary driver depends on who you ask. I can tell you that I based thi

Like all big changes, I bet it happened for many reasons, and which one is considered the primary driver depends on who you ask. I can tell you that I based this on recollections of talking with the 6.01 instructor when I took it, as well as talking with Abelson and Sussman about it in passing, but also that my memory of that time in my life is extremely fuzzy and should be taken with a grain of salt.