What does "many" mean? 10? 20? Out of how many programmers who were active back then?
20 years ago most programmers were not using Smalltalk or lisp machines or whatever, even if those things existed they weren't used often, so the author is technically correct about the "state of the art" with the caveat that their were many attempts to go beyond this but nothing got any traction.
Also, you are incorrect about 20 years ago. The first example of liveness and directness in programming was in...1962 with the Sutherland/Sketchpad demo. 50 years ago.
I think 20 years ago would've been a good time to really hardcore market those environments. As a new student with a profitable software company, I would've been interested in this. However I never heard about these technologies until much later; C(++) & Pascal (Modula) and 'rapid' friends Clipper (for business applications) and such were things popular then. Not sure how it was in the US then, but in the EU I didn't see much promotion going on for Smalltalk/Lisp and I didn't know anyone outside uni using those languages. So I think Chris is right there; most programmers will never have seen anything like this in their lives nor do they know it exists, even if they were around in the 80s/90s or earlier when they could've known.
Indeed! The Sketchpad demo. The Mother of All Demos (Englebart who basically conceived of hyper-media and the future of knowledge work). The Symbolics lisp machines.
It's all really cool stuff. I'm really glad that Light Table is making it popular again. Maybe this time we can at least give a nod to where these ideas come from so that more people can be aware. New instead of novel.
20 years ago most programmers were not using Smalltalk or lisp machines or whatever, even if those things existed they weren't used often, so the author is technically correct about the "state of the art" with the caveat that their were many attempts to go beyond this but nothing got any traction.
Also, you are incorrect about 20 years ago. The first example of liveness and directness in programming was in...1962 with the Sutherland/Sketchpad demo. 50 years ago.