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One way to approach this topic is to compare our spine with those of other primates or mammals, looking at how different vertebrate groups evolved different solutions to support their body weight and movement. For example, some researchers have suggested that the transition from quadrupedal to bipedal locomotion, which occurred in our hominin ancestors about 6 million years ago, increased the load on the lumbar spine and altered its curvature * . This may have made us more prone to lower back pain than other primates who retain a more flexible spine " .

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One way to approach this topic is to compare our spine with those of other primates or mammals, looking at how different vertebrate groups evolved different solutions to support their body weight and movement. For example, some researchers have suggested that the transition from quadrupedal to bipedal locomotion, which occurred in our hominin ancestors about 6 million years ago, increased the load on the lumbar spine and altered its curvature * . This may have made us more prone to lower back pain than other primates who retain a more flexible spine " .
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Carl T. Bergstrom (ct_bergstrom@fediscience.org)'s status on Monday, 06-Mar-2023 18:29:59 JST Carl T. Bergstrom
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The worst thing that baby bear does, though, is the same thing that other large language models do: IT MAKES SHIT UP.
This is absolutely definitely *not* what I am looking for in a search engine.
Here's an example. Asked to elaborate on phylogenetic approaches to understanding lower back pain, "balanced mode" describes research on changes to the spine six million years ago.

In conversation Monday, 06-Mar-2023 18:29:59 JST from fediscience.org permalink