This morning in conversation arose the Waste Isolation Pilot Program dilemma. Given that this lethal radioactive material has to remain isolated for ten thousand years, how do you create a nonverbal warning sharp enough and strong enough to convince the humans of ten centuries hence not to disturb it for any reason?
Ten thousand years is longer than the earliest aspects of agricultural civilization. We have not a single symbol or concept in common with the humans of that era. How can we communicate across such a vast gap? Many greatly ingenious and talented people have made proposals. Eventually one will be chosen.
And we will never know what happens.
It’s ten thousand years in the future. There is no plausible chance that we or anyone with anything in common with us will last to see how this endeavor plays out. It’s not even a question of “history will tell,” because by that point history won’t be history.
We can spin as many scenarios as we like, with as much detail and variety as we want. But we will never receive an answer. It is beyond us. The wall is impenetrable, and always will be.