Technology’s grip on modern life is pushing us down a dimly lit path of digital land mines

SAN FRANCISCO (AP) — “Move fast and break things,” a high-tech mantra popularized 20 years ago by Facebook founder Mark Zuckerberg, was supposed to be a rallying cry for game-changing innovation. It now seems more like an elegy for a society perched on a digital foundation too fragile to withstand a defective software program that was supposed to help protect computers — not crash them.

The worldwide technology meltdown caused by a flawed update installed earlier this month on computers...