A time traveler from the future looks back on the release of Google Glass:

“…It was simply deemed unacceptable to wear them persistently. And in fact users reported to having been socially pressured to use them quite a lot as they had previously used their phones. Pulling them out as needed. Which utterly defeated the purpose. On some level — that’s what broke Google Glass. It wasn’t what it was supposed to be. It wasn’t persistent. It was more cumbersome and socially uncomfortable than the previous paradigm.”