Comment by OneOffAsk

I don’t think UI’s natural interface is visual. I think the natural interface is a state machine.

The most reliable and performant UI code I’ve written usually tackles this head on by thinking through all the possibilities of different states the application can be in and how the transition of each state should look. This can very quickly get mind boggling complex.

Systems programming languages seem like they model their problems better because it’s less common to ask a systems programmer for a like button that shows bubbles when you press it. If you model your UI explicitly like a state machine, you can say “no” to the bubbles like every systems programmer says “no” to most features, because you realize the explosion of state will be unmanageable. Or you can use a JavaScript framework and download a bubbles package and wonder why your app is buggy, but have job security.