I largely agree with this. I've been coding professionally a pretty long time and have worked with a wide variety of languages (including quite a lot of Object

I largely agree with this. I've been coding professionally a pretty long time and have worked with a wide variety of languages (including quite a lot of Objective C back in the day), and I've just never met a language with a larger surface area than Swift. I can work with Swift and be productive with it, but at the same time, I feel like I still encounter new patterns, gotchas, property wrappers, language quirks, language changes, type-system oddities, etc, almost every day, and I have a hard time keeping track of it all.