Windows and Microsoft Office total around 220 million lines of code. Back in the 1970s at Xerox PARC, they delivered about half of the feature set of Windows and Office in 10,000 lines of Smalltalk code. What the hell happened???
At the 33:40 mark in the video, Alan Kay basically says what I said here: IT’s Dirty Little Secret.
Smalltalk can be used to do truly great things, if it’s used correctly, only if you do OOP the Smalltalk way. Forget Java and C# and C++.