As soon as we invented the wheel, humankind embraced machines to help us farm, irrigate, cut cloth and steel. We built cities linked with shipping routes, on land, sea and air. There’s no doubt that machines have made life easier for us. Artificial intelligence and its desktop cousin, the computer, and all its handheld relatives, have connected us to the global marketplace and made our world faster, smaller, and easier. At least when it works. As the saying goes, to err is hu