Comment by dismalaf

> Um, isn't it?

No. There's been GC-less Lisp's over the years, here's a good paper on one: https://dl.acm.org/doi/10.1145/142137.142162

There was also pre-Scheme, GOAL, nowadays there's Carp and Dale. Zeta Lisp (and now SBCL) had/have arenas and you can manually allocate, etc...

> McCarthy's LISP

McCarthy also envisioned it having M-expressions.