Brian's video is one of the most influential bits of wisdom I've received in my career. Up until this video I did not have a language for explaining the problem

Brian's video is one of the most influential bits of wisdom I've received in my career. Up until this video I did not have a language for explaining the problems I ran into trying to build OO systems. It also helped me understand why writing procedural-functional code felt so natural and easy. I was a die hard OO/UML guy. I even contributed to various open source software projects for a model-driven-architecture framework, a UML editor, and integrations with Rational Rose. I was an evangelist for good OO practices, SOLID, etc... As a development coach I was quite fervent. Looking back on that I feel like a fool. When I read the code refactoring examples from Uncle Bob and others I see all the problems Brian talks about in his video (and more). OO was a nice idea but we got the granularity and implementation wrong.