"It should be clear to anyone that models of the world are completely different from models of software. The world does not consist of objects sending each other messages, and we would have to be seriously mesmerised by object jargon to believe that it does.

… we use different sets of building blocks for modelling the world and modelling the software …"

1994 "Designing Object Systems"

https://www.google.com/books/edition/Designing_Object_System...