One of the few hyperlinks is to an article by PG about how using Lisp enabled his small team to build amazing stuff that ran circles around larger teams that we

One of the few hyperlinks is to an article by PG about how using Lisp enabled his small team to build amazing stuff that ran circles around larger teams that were using other languages. Based on that link, with no other knowledge, I also assumed that meant the author might have used Lisp, but it also makes sense in the "higher order language", or even just "writing custom code to solve problems" sense.