I have written on my blog earlier about one of my favorite books, Donald Schon's "Beyond the stable state". Unfortunately this is a book that is almost forgotten. Probably because people see it as 'old'. It was first published in 1971.
The core idea of the book is that there is no 'stable state' in the world and never will be. Change is the normal, stability is abnormal. Schon makes the case that any form of knowledge that can support designers, therefore, need to be based on the notion of 'no stable state'. I will here only point to the most wonderful pages in the book where Schon presents his notion of 'projective models'. This is a concept that captures what designers do and in his language an 'existentialism' approach instead of a 'systems analysis' approach. He develops this briefly in a subchapter called "Other ways of knowing". He does this on only 10 pages, p 227-237.
It is possible to read the argument in this book as a challenge to more scientific approaches that are built on the idea that knowing about potential future solutions (designing) can best be done by engaging with and extrapolating what we know is stable in the world. Schon's proposal presents an approach that takes the full richness and complexity of everyday reality into consideration. It leads to a realization that 'knowing' as a designer cannot be disconnected with who you are and your experiences and your ability to capture the ultimate particular conditions of each design situation.
I can't write more just know, but I am working on this idea of 'projective models' from Schon and hopefully, it will become a chapter in a book I am slowly working on.
(By the way, if you know someone who has written about this concept, please let me know.)