Great talk about OOP by Sandi Metz: https://youtu.be/XXi_FBrZQiU

Churn vs. Complexity

Affordances

1. Anthropomorphic: objects have life
2. Polymorphism: mimic, conform to same API
3. Loose coupling
4. Role Playing: same as mimicking, conforms to same API
5. Factory Created: hide conditions that choose objects
6. Message Sending: shouldn't know the implementation

Key notes for me:

• Reduce your execution paths
• Dependency Injection is your friend
• Balance between procedurally and OOP, don't swing the pendulum to either side, find the right balance
• Factories are a good thing
• Don't use methods or classes to just hide code (edited)