There are over 15 years of PDAs before the iPhone. It didn't appear out of thin air. It was an evolution from Newton->Palm Pilot->Clie->Windows CE PDAs->Sony Cl

There are over 15 years of PDAs before the iPhone. It didn't appear out of thin air. It was an evolution from Newton->Palm Pilot->Clie->Windows CE PDAs->Sony Clie->iPhone Yes, it was the one that got everything right and it did bring about a revolution but it was evolutional step. It shipped with cellular data (all previous PDAs it was optional). It had an interface designed for a finger rather than a stylus. But, if you were a geek and had PDA from 1995 though 2007 you had already had a PDA in your pocket, where already sending emails from your pocket, browsing the internet, downloading apps, etc... AR will follow some similar progression. Today's AR is too large (same as Newton), with a bad display (same as Newton), too expensive (same as Newton), crappy OS (same as Newton). But someone will get it right eventually and bring about an AR revolution.