It's groundhog day again.

To some, the cup of immortality is a poisoned chalice, more likely to serve up existential despair than eternal fulfillment. Martin Heidegger, one of the most notable philosophers of the 20th century, believed that we are situated by our past experience, and oriented to our future, in particular, its end-point. Our relationship to our past and future gives our lives meaning, and infinite time could destroy that relationship.