Discussions like these always bring me back to the "10,000 year clock" ... http://en.wikipedia.org/wiki/Clock_of_the_Long_Now http://en.wikipedia.org/wiki/Clock

Discussions like these always bring me back to the "10,000 year clock" ... http://en.wikipedia.org/wiki/Clock_of_the_Long_Now http://en.wikipedia.org/wiki/Clock_of_the_Long_Now