I have came across the Winograd SHRDLU program and I found it very interesting and aspiring.
What is the consensus regarding it? Are there any similar attempts?
I'm reading the book of Terry Winograd Understanding Natural Language where he discusses the functionality of the program, LISP language and more. I also found the linguist Michael Halliday and the linguistic theory Systemic (functional) Grammar which is mentioned in Winograd's book.
Are there any other ai/NLP that use this theory as a basis for the semantic functionality?