> won't be able to communicate with generations after it.
Oh, they will be. But there must be specific structure to communicate this information, otherwise it is assumed "common knowledge" and nobody talks about it until suddenly everybody realizes nobody really knows anything about it because all people that knew it assumed it's obvious and nobody thought to talk about it explicitly and now they're all dead.
> The nuclear symbol is widely recognized across the planet
Now. Will it be in 10K years? Who knows. Try to read works about 15th century life and see how much of that was obvious back then is obvious now.
> if every one of the cultures that understands the importance of it is killed off.
The cultures that exist now won't probably exist in 10K years. Could we pass knowledge through if we took consistent effort - maybe. But the whole point is how to make sure it's a consistent effort over 10K years.
Oh, they will be. But there must be specific structure to communicate this information, otherwise it is assumed "common knowledge" and nobody talks about it until suddenly everybody realizes nobody really knows anything about it because all people that knew it assumed it's obvious and nobody thought to talk about it explicitly and now they're all dead.
> The nuclear symbol is widely recognized across the planet
Now. Will it be in 10K years? Who knows. Try to read works about 15th century life and see how much of that was obvious back then is obvious now.
> if every one of the cultures that understands the importance of it is killed off.
The cultures that exist now won't probably exist in 10K years. Could we pass knowledge through if we took consistent effort - maybe. But the whole point is how to make sure it's a consistent effort over 10K years.