The goals of CLOS were to support object-oriented programming, inspired by Smalltalk, which was the first reflective object system, and which has its own meta-o

The goals of CLOS were to support object-oriented programming, inspired by Smalltalk, which was the first reflective object system, and which has its own meta-objects and corresponding protocols. CLOS evolved out of earlier LISP object systems, LOOPS and Flavors, both of which predate Brian's thesis, and both of which have various kinds of meta-objects with protocols. I don't know anything about how 3-Lisp might have influenced CLOS, but I'd like to hear more about that.