"These are the principles that Danny Hillis used in the initial stages of
designing a 10,000 Year Clock. We have found these are generally good principles
for designing anything to last a long time.
With occasional maintenance, the clock should reasonably
be expected to display the correct time for the next 10,000 years.
The clock should be maintainable with bronze-age
It should be possible to determine operational
principles of the clock by close inspection.
It should be possible to improve the clock with