From the Back Cover: Before we get started here, Yorick, I should probably mention that your life has the potential to have an improbably large effect on the future. The good news is that you're a temporal hinge upon which all our tomorrows rest! The bad news is that the only way for you to put this legacy into motion is by dying. But the good news part two is that it's really really really really insanely likely that you're gonna die today!