WORK IN PROGRESS, THIS IS AMENDED AS I LEARN PDP-1 LISP MYSELF. But hopefully, it will get you started. Feedback is very much solicited in the Google Group :-) PDP-1 Lisp: Introduction Lisp was developed in 1958 by John McCarthy at MIT. It pioneered a high-level, symbolic programming language designed for AI research. Early Lisp introduced key concepts such as recursion, symbolic expressions, and automatic storage management. The PDP-1 version was implemented in 1960 by Peter Deutsch, the son of a MIT professor but at the time as a 14 year old, still at high school. It is a highly minimalist and efficient Lisp suitable for the tiny PDP-1. Notably, he invented the idea of a read–eval–print loop (REPL, famous to many of us from Python) along the way. In other words, this was the first-ever interactive programming environment — a major innovation and central to Lisp to this day. PDP-1 Lisp evolved Lisp from a theoretical, punch-card loaded language into a practical, interactive tool.…