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t1_ixax8rn wrote

Reply to comment by in TIL that in 2003, scientists "resurrected" an extinct species of Ibex, bringing back one living specimen, only for it go extinct again seven minutes later when the specimen died of a lung defect by

Those bunkers would need sufficient access to new materials for indefinite use (particularly energy production). You could not produce a full supply chain to produce the necessary tech to replace aging components in the bunkers, from inside the bunkers, within a few decades. At which point, your motors, batteries, ICs, etc would all start to die, and with them, us.

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t1_ixaxouy wrote

Or you'd operate in low-oxygen environments via rebreathers, yeah. I'm not suggesting it'd be trivial, only that even drastic changes to our environment are unlikely to wipe us out.

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t1_ixayqro wrote

Rebreathers are not sustainable, they require a supply chain to be able to keep using them. The scale of the supply chains required to keep humanity alive in such a situation is far beyond what can be achieved through bunkers.

The only way we could survive such a situation is where the environment will become survivable within decades, which in evolutionary/geological timescales is a blink of an eye.

No one is building and preparing bunkers for surviving centuries to millennia, because it's not feasible.

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