One of the weird things about hype bubbles is the way something goes from world-changing to forgotten. Apple's Vision Pro, one of the many waves of 3D hype going back to the 1850s, is just on the cusp of that. I saw a lot of people talking it up, often heatedly, but I haven't seen a single admission of error, a single lesson learned. Which means we're no more prepared for the next hype wave.