21 votes

When did humans start settling down? In Israel, new discoveries at one of the world’s oldest villages are upending the debate about when we stopped wandering

5 comments

  1. [5]
    Algernon_Asimov
    Link
    When I read articles like this, I'm reminded of the truism that all the human fossils we've ever found amount to only a tiny fraction of a tiny fraction of a tiny fraction of all humans who ever...

    When I read articles like this, I'm reminded of the truism that all the human fossils we've ever found amount to only a tiny fraction of a tiny fraction of a tiny fraction of all humans who ever lived. We're not even seeing the tip of the iceberg: we're just seeing a tiny scraping from the tip of the iceberg, based on the happenstance of the survival of a random bone here and a random tooth there.

    Similarly, with archaelogy, our studies are restricted to the sites that survive. This is why the stereotype of our ancestors being "cavemen" took hold - because we found lots more artefacts in the protected environments of caves than out on weather-exposed plains or in biologically active forests.

    So, when we find "the oldest" something... how do we know? It's only the oldest one we have found. Just because the earliest evidence of permanent habitation or deliberate agriculture dated from 10,500 years ago, that doesn't mean that's when these things started. What if the earlier examples were made from less durable materials or in more exposed locations? A village built mostly of wood wouldn't last anywhere near as long as a village built with stone - but the wood is easier to work with, and more likely to be used before stone. There might have been hundreds of villages out there, that we will never find, because all evidence was erased by natural processes millennia before we even started looking.

    Hence observations like this:

    The village here flourished 2,000 years before the revolution got going, and the growing impression is of a place curiously ahead of its time—“a true turning point in human culture,”

    The reason we think this village is ahead of its time is because we haven't discovered other contemporaneous villages. But what if they were commonplace at the time, and have merely been erased by wind, rain, and erosion in the 12,000 years since then?

    12 votes
    1. [4]
      shusaku
      Link Parent
      The core of the issue is that the date given for this agricultural revolution is rooted in genetic data. This data let’s you take diverse findings and kind of roll back the clock as you look for a...

      The core of the issue is that the date given for this agricultural revolution is rooted in genetic data. This data let’s you take diverse findings and kind of roll back the clock as you look for a common ancestor. It is possible that we’ll find more genetic material that could push the agricultural revolution back but to fit that with what we have now is challenging. But I think the thesis here that humans settled down before they figured out how to genetically engineer a high yield wheat is looking quite strong.

      7 votes
      1. Algernon_Asimov
        Link Parent
        I've read somewhere along the way that the initial "crops" humans cultivated were just wild varieties of the grains we later genetically engineered through selective breeding. That wouldn't show...

        I've read somewhere along the way that the initial "crops" humans cultivated were just wild varieties of the grains we later genetically engineered through selective breeding. That wouldn't show up in genetic data.

        5 votes
      2. [2]
        patience_limited
        Link Parent
        One possibility is that there was a naturally occurring grain variety in the area with attractive properties - high yield or palatability. It kept reseeding itself, so nomads settled where the...

        One possibility is that there was a naturally occurring grain variety in the area with attractive properties - high yield or palatability. It kept reseeding itself, so nomads settled where the good grain grew, learning to nurture and cultivate it over a wider area.

        3 votes
        1. Bubblebooy
          Link Parent
          Or there was another grain or wheat variety that was completely replaced by wheat over time.

          Or there was another grain or wheat variety that was completely replaced by wheat over time.

          3 votes