The Clock in the Mountain
There is a Clock ringing deep inside a mountain. It is a huge Clock, hundreds of feet tall, designed to tick for 10,000 years. Every once in a while the bells of this buried Clock play a melody. Each time the chimes ring, it’s a melody the Clock has never played before. The Clock’s chimes have been programmed to not repeat themselves for 10,000 years.
Kevin Kelly on the Long Now Foundation’s 10,000 Year Clock project. Read the whole thing.