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Alan Kay on Objects, Messaging, and Object-Oriented Programming

Yoshiki Ohshima (大島芳樹) · Lecture · YouTube title: Seminar with Alan Kay on Object Oriented Programming (VPRI 0246)
Why it's here

HN points to it as primary-source evidence of what Kay meant by objects, which resembled services and message passing rather than modern class-based OOP.

What it covers

A long recorded seminar in which Alan Kay discusses object-oriented programming, probably from the mid-1980s. He covers the original idea of objects, messaging and the work done at Xerox.