In the booklet of information you receive when you become a parent about how not to screw up your kids, the thumb trick is presented near the back, hidden between the sections on “what do you do when ...

Everyone's let it happen at some point -- that moment where we're desperately trying to use our smartphones in one hand while juggling groceries or coffee in the other. There'll be no way to recover ...

Let’s try a demonstration that we all enjoyed in elementary school. Close one eye, hold out your thumb at arm’s length, and align it with an object on the other side of the room. Without moving your ...