I'm a big fan of his work. The VOMPECCC fruit picker[0] article, was what finally got me to understand (and start using) the power of the stack in my own programs. The whole "propertized string" as "unit of currency" concept I found extremely useful, and now I use a custom consult document picker (with rich annotations) to perform actions on different kinds of XML documents that live in my BaseX database, it's super cool.