I was the chair for Demonstrations at OOPSLA'88 and Dan gave a demo of Fabrik as well as presenting the paper.

I remember being completely astounded at the demo, a packed room, and other peers gasped and wow'ed during the presentation - I agree that Dan Ingalls, soft-spoken and humble, is truly an unsung HERO of many many ideas and innovations, some that stuck, and some that were stepping-stones..

As an aside, also at OOPSLA and in the same soft-spoken and humble way, Trygve Reenskaug, inventor of Model-View-Controller paradigm gave a demo of "SI" a manufacturing oriented project management - I was a manufacturing guy doing Machine Shop automation in Objective-C and was validated and affirmed that others were solving practical problems in the real world while doing invention and innovation practically, instead of all the ivory tower types just cranking out papers.