Earlier quoted context omitted.
Well, of course the relics that we've discovered were safe while they were lost. Because otherwise we wouldn't have discovered them. That doesn't mean that being lost is safer than being in a museum. (Perhaps it is , but where's the evidence?)
>(Perhaps it is, but where's the evidence?) The relics that were safe through social meltdowns and other problems are the evidence. There are pretty safe assumptions that lead to that position too - museums will get destroyed just as other municipal buildings would in a period of societal collapse. Imagine you're uneducated, living in what was a museum and need to build a fire ... If the artefacts are still safely en…
His point is that if a colony of insects happened into that cave a month after they were "safely ensconced" 500 years ago, then they wouldn't be there for us to find. Basically you're falling for survivorship bias.