Supertasks are more philosophical than physical, but they do make for a fun few minutes of contemplation. They make us ask what happens when an infinite number of things happen in a finite amount of ...

If you switched on the light this morning and walked to the bathroom, you’ve put yourself in the middle of a philosophical conundrum. In one case, you have accomplished what’s known as a supertask. In ...

ONE example of a possible supertask, invented in 1954 by the philosopher James Thomson, asks us to imagine a reading lamp with an on-off switch. Suppose the light is off to start with. If you press ...