I nearly jumped out of my proverbial seat with joy when Casey talked about it being about where you draw your encapsulation boundaries. YES! THIS IS THE THING PEOPLE ARGUING ABOUT OOP NEVER SEEM TO ADDRESS DIRECTLY!
Honestly would love to see a Kay and Casey discussion about this very thing.
I find the discussions about real domain vs OOP objects to be a bit tangential, though still worth having. When constructing a program from objects, there’s a ton of objects that you create that have no real-world or domain analogs. After all, you’re writing a program by building little machines that do things. Your domain model likely doesn’t contain an EventBus or JsonDeserializer; that purely exists in the abstract ‘world’ of your software.
Here’s a thought: Conceptually, what would stop me from writing an ECS in Smalltalk? I can’t think of anything off the top of my head (whether I’d want to or not is a different question). Casey even hints at this.
This is probably the best Casey talk I’ve ever seen and one of the clearest definitions of ‘here is my problem with OOP’. I don’t agree with everything necessarily, but it’s the first time I’ve watched one of these and thought “yep they actually said the concrete thing that they disagree with”.
Honestly would love to see a Kay and Casey discussion about this very thing.
I find the discussions about real domain vs OOP objects to be a bit tangential, though still worth having. When constructing a program from objects, there’s a ton of objects that you create that have no real-world or domain analogs. After all, you’re writing a program by building little machines that do things. Your domain model likely doesn’t contain an EventBus or JsonDeserializer; that purely exists in the abstract ‘world’ of your software.
Here’s a thought: Conceptually, what would stop me from writing an ECS in Smalltalk? I can’t think of anything off the top of my head (whether I’d want to or not is a different question). Casey even hints at this.
This is probably the best Casey talk I’ve ever seen and one of the clearest definitions of ‘here is my problem with OOP’. I don’t agree with everything necessarily, but it’s the first time I’ve watched one of these and thought “yep they actually said the concrete thing that they disagree with”.