Upon reflection, to build successful apps for the #VisionPro, we need to unlearn a lot about apps that we took for granted since, idk, maybe we started programming for the web, almost 30 years ago. Some multi-window pre-web PC/mac apps might be a closer point of departure ... but in any case, not close at all.

Of course Apple's message for devs is "it's all easy, just a few more APIs beyond what you do on iPhone". But to actually leverage the new medium, that's a different matter entirely.