The craziest app came out a month after the App Store opened to the public, charging $999 for a digital red gem and the text “I am rich.” It sold six copies and shut down the next day.

The next craziest app came out April 1, 2014. You’d tap a button to send your friend a one-word message: “Yo.”…

“You should...commence the conversation by saying 'Hulloa!'” suggested the first phone book, New Haven, Connecticut’s The Telephone Directory. “When you are done talking, say 'That is all!', and the person spoken to should say 'O.K.'”

And so language changed, at least to start conversations.

As…

A cardboard sign and chartered plane doesn’t make an airlines, nor a video and signup form an app. But neither does a full-fledged airlines—complete with check-in counters, planes, pilots, and safety videos—guarantee success, nor the most polished app in the App Store.

“Ideas are worth nothing…

A dollar today is worth a bit more than a dollar tomorrow, something we’ve learned from experience since childhood. Yet thanks in part to Moore’s Law, technology flipped the equation on its head. First appliances, then computers, then TVs and phones seemed to offer more and better features each…