I took a one week industrial course at MIT back in ‘79, I think it was. Sussman, Knight, Batalli, the whole amazing crew. We started from scratch with gates and progressed to finished layout designs by the end of the week. Most everything had been coded in Scheme, including the test simulation software. I walked out with a five inch binder of instruction and a vastly overloaded head. It was one of the most amazing experiences in my life. Shortly thereafter, they did the Scheme chip using those tools.