There is always more to learn about any topic, also about SOLID.
simple pointers to create a clean, intelligible codebase that won't use a lot of dependencies
- Kill Primitive Obsession
- Name things as Nouns (and not using verb nouns that have an ‘er’ ending)
- Remove duplication
First I read his article "Why I Don't Teach SOLID" where I didn't get his point, but the article where the quote above is from does make lot's of sense. Event though after having read poodr I can't agree that inheritance will become unused.