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Joined 1 year ago
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Cake day: June 9th, 2023

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  • Oh, this is great. There may have been more results since I was working on a field project studying them, but to my knowledge we have absolutely no idea! They are not particularly well adapted to the cold, but their range keeps extending northward. This well predates the rapid climate change caused by humans, so we cannot use that as a reason. They are a bit of a mystery.

    My guess would be that they are occupying a niche where limited brain and limb development (problems all marsupials face) are not limiting factors on success. Maybe their lack of a close genetic relation when surrounded by placental mammals gives them some pathogen resistance when scavenging? Those are just mildly educated guesses. When I was working with them we had no idea, and our field results were not at all enlightening.


  • I do not mean to be pedantic, but this is topic I love.

    Marsupials do not fill a niche by virtue of their lack of placement. Instead, they have survived so long by virtue of their isolation.

    It turns out that the adaptions required for marsupials to birth and raise young without a placenta make them inferior to placental mammals in almost every scenario. They get out competed and die off in almost every instance. South America had marsupials, not placentals, until it formed a land bridge with North America. What happened then? All the marsupials died off with the weird exception of the American possum. The placentals straight up out competed them across the board.

    Australia has kept marsupials only because of its extreme isolation. When any type of placental mammal has been introduced to Australia, it has ruined the ecosystem and taken over the niche it fills.

    Independent of humans, marsupials are a dying design. We just happen to live at a time when we can see that extinction in process. Yes, humans have sped it up by more rapidly introducing placental species, but we can see how it happened without human intervention as well.



  • “We keep thinking like OpenAI is a company that has a clue what it is doing because they have this amazing product that is getting used everywhere in business. In reality, they are a startup, and startups are going to have startup problems. We cannot treat them or their product like they are established and stable.”

    -my wife, who leads work at another company with OpenAI tech

    I know the above quote is from someone “unimportant” in the industry, but to me it encapsulates exactly what we have seen from OpenAI in the past couple weeks. She became simultaneously reassured and more worried when Satya Nadella, the highly respected CEO of Microsoft, became directly involved. I wonder what she will think of this development when she wakes up.