Why humans love technology that does literally only one thing

In the world of gaming, it's always big news when new consoles are announced. So this week, when Sony hinted at the specs for its forthcoming PlayStation, there was the usual oohing and aahing. But along with excitement and speculation, there came a lingering sense of surprise. After all, this was never supposed to happen. For years, we heard that just as the smartphone made point-and-shoot cameras and PDAs obsolete, so too would mobile gaming kill consoles under TVs. PlayStations and...