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Are there recognized symbols for vomiting, diarrhea, hair loss, weight loss reaching near skeletal stages and finally death? Along with some kind of indicators for passage of time that seems more useful at least for high exposure areas.



The issue with that is we can make 0 assumptions about the culture we are trying to communicate with so pictograms aren't a good medium to begin with but let's set that aside. Consider maybe they don't even read left to right or top to bottom so now without carefully making sure they know how time is represented your message can be interpreted as one of resurrection and healing maybe?


Some things, like the passage of the sun in the sky, should be universal. Literally every civilization on Earth is familiar with the concept of a day. Death is a universal concept too.

Of course there is no helping if the future people are especially dismissive of your warnings, but they should suffer from debilitating radiation sickness before they get too far away, so at least the leak would be somewhat contained.

Interesting story idea for a post-apocalyptic agrarian society where some guy wipes out his rival's towns by lightly burying preapocalyptic nuclear waste in the town square to kill off the inhabitants while preaching about curses and gods smiting the inhabitants for their sins.


Yeah time was meant more as just an illustration of how careful we have to be with and pictographic warnings because of how little we can take for granted about the people we are trying to warn.


Right. If you're assuming written language will have entirely changed, barring some earth-wide catastrophe we can (likely) assume a future civilization will understand the IDEA of radiation - making the actual danger and representation of radiation the most important element to communicate.




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