The Evolution of Smalltalk From Smalltalk-72 Through Squeak (2020) [pdf]

Great find. I'm new to programming, currently learning Python3, but heard about this Smalltalk branch of programming languages, and afterwards I intend to take the Pharo MOOC, to learn a modern version:

http://mooc.pharo.org

So far I still didn't get the point with object orientation, at least in Python. All these cat, dog, mammals-like examples look pointless, I still can't see a big advantage over normal procedures and functions, and it just looks worse to my eyes. I hope I can finally get the point with object orientation by plunging in a pure OO environment.