But message sending included properties and KVO/KVC that basically every object in an iphone/osx program used. It wasn’t long until they started to @synthesize

But message sending included properties and KVO/KVC that basically every object in an iphone/osx program used. It wasn’t long until they started to @synthesize these cause everything was a property. Yes, full-C modules could be written and C “interop” was just code, but the main use case was dynamic as hell with a little type checking peppered over it. They promised that objc_msgSend was fast and assembly, of course, but that is dynamic dispatch in basically every line of code still.