If your curiosity on matters metaphysical was piqued by today's discussion, you might find this article in ArsTechnica of interest - a layperson's explanation of quantum computing.

On the other hand, you might want not to wander off in a different direction, but learn more about light cones and their significance in understanding relativity and time. If so, this site is an intro-level description of light cones, with videos and such, created for non-specialists at Syracuse University.