I know less about GOOL, but the following seems to imply that GOOL was probably also a s-expr based non-Lisp language: > As a language GOOL borrows its syntax

I know less about GOOL, but the following seems to imply that GOOL was probably also a s-expr based non-Lisp language: > As a language GOOL borrows its syntax and basic forms from Common Lisp. It has all of Lisp’s basic expression, arithmetic, bookkeeping, and flow of control operators. Note that Andy explicitly only mentions things like syntax and arithmetic, but not any kind of list processing. Again, I am not sure, but I wouldn't be surprised if GOOL isn't a Lisp either, but only a Lisp-flavoured DSL for event-based AI code.