Our days are filled with innumerable decisions, ranging from the mundane to the consequential. For instance, you may start the day by choosing which sugary treat to buy from the café en route to work, ...

Imagine you're in line at your favorite bakery, deciding whether to have a doughnut or a tart. You weigh them up, the doughnut wins, and you settle on that. By the time you're at the front of the line ...