5. The understandings are that winners never take all.
6. Though bionic legs are of course a huge boon to amputees, they lack actual nerve connections with the body. As a result, walking on them is cumbersome and tiring. But last year, Seattle resident Zac Vawter was outfitted with the world's first thought-controlled leg, a bionic limb that takes signals directly from his mind.
One of the most discussed potential use cases of the block chain is as a decentralized Uber. Instead of using an app, customers could order a car and pay the driver directly, cutting out the middleman. (Sorry, Travis Kalanick.) The block chain can be utilized for everything from the storage of secure documents (that is, a decentralized Dropbox, too) to “watermarking,” in which a specific coin could contain, say, the deed to your house. “The block chain is going to spawn decades of innovation,” says Ryan Selkis, director of investments at the Digital Currency Group, created by former SecondMarket founder Barry Silbert. “It could lead to things like frictionless share issuance, title transfers, smart contracts. Collectively these things make up the backbone of the economy. If you wanted to create a decentralized Uber, Dropbox, Facebook, you could reinvent the Internet.”