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redirected from Main.RagnaroofProofing

alt title(s): Ragnaroof Proofing
We've gone from bashing our information into rock, where it will last a billion years, to putting the sum-total of the knowledge of the universe on - a chip you can destroy with a fridge magnet.
— Glen Foster

It is, understandably, common in post-apocalyptic fiction to show the ruins of society. However, many are set several decades, or even centuries or millennia After The End, and the remains of the pre-cataclysm society are in remarkable condition. Buildings and objects will never fall apart due to neglect, and any pre-cataclysm tools or vehicles that the characters find will work just fine.

In reality, time isn't so kind to abandoned modern technology. As far as electronics are concerned, all but the simplest circuits will fail after decades of being unused. Electrolytic capacitors dry out, batteries self-discharge, flash memory very slowly fades away, and the chassis and contacts will rust. Hard discs rot or degrade in the same time frame, and the skin of optical media such as blue-rays and DVDs corrodes and renders the disc illegible (aka "CD rot"). Wooden frame buildings will last about 50 years before falling apart thanks to termites and rotting. After about 75 years, cars will turn into almost unrecognizable piles of metal. Large bridges will collapse after only a century, and most skyscrapers will collapse after around 200-300 years. After 500 years, nearly all concrete structures still standing will crumble as their steel reinforcements corrode. And this is all assuming that a natural disaster like a tornado, earthquake, or hurricane doesn't destroy it all first. (How much of Florida would survive 10 years if people weren't around to board everything up each summer?)

None of this even takes into account planned obsolescence.

After a thousand years, the Earth will look much like it was before humans, and few obvious traces of civilization will be left. Plastics will keep for a long time until something figures out how to properly eat them; major cities, being massive conglomeration of artificial rock on the scale of a coral reef or lava flow, will leave traces in the geological record discernible for several hundred million years; depleted uranium will remain detectably depleted for billions of years; anything made out of bronze is expected to last for millions of years (so cast your memoirs with it) — but none of this will be visible to a casual observer, or even a medieval society.
  • Note: there is an expensive way to render any metal rust proof the same way that platinum is. One would assume that these relics have survived because of a similar process and the chemicals used in it are breaking down. This allowing the relics to decay in places where the treatment faded first.
If only one thing inexplicably survives, such as in a Time Travel or Earth All Along setting, it's known as The Constant.

Societies with Ragnarok Proofing will allow a Scavenger World to exist, using Schizo Tech from many different time periods.

The History Channel produced a television special documentary film and TV series Life After People where scientists and other experts speculate about how the Earth might be like if, suddenly, humanity no longer existed. The timeline they predict can be found here.

The term Ragnarök comes from Norse Mythology, and means 'Destiny of the Gods'; it's more often mistranslated though as Götterdämmerung, 'Twilight of the Gods' due to some German composer by the name of Richard Wagner.

A subtrope of Sci Fi Writers Have No Sense Of Scale. See also Durable Deathtrap, Apocalypse Not, In Working Order. Subtrope of They Dont Make Them Like They Used To. See Indestructible Edible for the food version.

See also Ragnarok Proofing.


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