It's always intriguing when Apple dips into a new product category, but several things about a reported iPhone Fold give me pause, including what will probably be its sky-high price tag.

Four-legged robots that scramble up stairs, stride over rubble, and stream inspection data — no preorder, no lab coat required.

The Airbus A330 that I fly across the Atlantic to any of several European cities is equipped with onboard navigation computers that tell us in the cockpit exactly where we are at any time. But when ...