Post B3AOyCLuGPPLdDsqbw by xkcd@mastodon.xyz
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 (DIR) Post #B3AOyCLuGPPLdDsqbw by xkcd@mastodon.xyz
       2026-02-10T04:16:06Z
       
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       This dating is corroborated by the presence of stone tools at the site, rather than earlier and less effective helium ones.https://xkcd.com/3205/