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jbotz commented on Beetroot juice lowers blood pressure by changing oral microbiome: study   news.exeter.ac.uk/faculty... · Posted by u/lightlyused
pinkmuffinere · a month ago
Do we know the mechanism by which this works? Is it just anecdotal, or is this studied at a population/statistical level?
jbotz · a month ago
I see everybody talking about the nitrate, but there is another substance in beets that might be relevant... betaine, also known as trimethylglycine HCL. I take about 800mg of this pure in my orange juice in the mornings and it gives me a very noticeable boost. But it is possible that this effect is specific to me and maybe other people who are "under-methylators" (which I think is a somewhat pseudo-scientific concept, but it led me to try betaine and I got results).

Betaine was first isolated from beets, hence the name, and as the other name, trimethylglycine, hints it has 3 easily donated methyl groups, so if you do need those for some reason it may be useful to you. It's also pretty cheap and unlikely to be harmful.

Edit: I found this... https://www.strongerbyscience.com/betaine/

jbotz commented on Ask HN: What's Your Useful Local LLM Stack?    · Posted by u/Olshansky
andrewmcwatters · a month ago
Perhaps, but that's not really up to users. Linux distributions, for example, control this pretty directly. You can alias it, but why bother? If you know that Ubuntu links python3, every Ubuntu installation that gets python from apt is going to do this.
jbotz · a month ago
Yes, but on all reasonably recent distros (including all current "LTS" releases) just `python` will also get you python 3.x. If there is still a python 2.x on your system you'll have to type `python2` to get it. So it is up to the user... to upgrade their system. You really don't want to work on a system that's so outdated that `python` is still python 2.x.
jbotz commented on Mammals Evolved into Ant Eaters 12 Times Since Dinosaur Age, Study Finds   news.njit.edu/mammals-evo... · Posted by u/zdw
hammock · a month ago
The weight of all ants on Earth is roughly equal to the weight of all humans- aka there are a lot of ants. And can be found everywhere mammals are able to live. So they make sense as a food source
jbotz · a month ago
While comparing things... a colony of leaf-cutter ants (which form some of the largest colonies with as many as 2 million individuals when the colony is mature) has roughly the same metabolic rate as cow (easily measured from the CO2 at the exits of their nest). So don't think of ants as tiny animals, think of ant colonies as fairly large animals.
jbotz commented on Mammals Evolved into Ant Eaters 12 Times Since Dinosaur Age, Study Finds   news.njit.edu/mammals-evo... · Posted by u/zdw
PNewling · a month ago
Your username makes me think you'd be a good person to ask:

Sorry, what? (Edit, this sounds like I don't believe you, but it is more that I am in disbelief!) Ants evolved from stinging wasps? Were they flying at that time? Or were wasps at some point non-flying and the 'wasps' grouping is a wide one like 'beetles' is?

This is such a fascinating space I know very little about.

jbotz · a month ago
Yes, ants evolved from wasps, and it's really not that surprising if you take a close look at a typical ant and a typical wasp, pretty much the only difference are wings and coloring. There also exist wingless wasps, and some of them are black and really quite indistinguishable from ants by non-entomologist. And that's after over 100 million years since the ants diverged from the wasps! Talk about a successful evolutionary design. Your closest relative from 100 million years ago was a little vaguely rat-like thing. (Edit to answer your specific question: the ancestor of ants and wasps obviously was winged and flying, since both families still have at least some winged members).

As a sibling has already pointed out ants do fly during "nuptial flight", and then discard their wings... wings would only be a hindrance for their largely underground lifestyle. Also ants have retained the stinger which also functions as an ovipositor (egg layer), and some species still use it for defense and pack a wallop of a poison, right up there with some of the of the worst wasps. Google "bullet ant" for some good stuff. Other ants just bite, and the burning you feel is from their saliva which consists mostly of an acid named after ants: fourmic acid (ant is "formica" in latin).

Edit to add one more random factoid that will surprise a lot of people: termites are not related to ants at all, and they evolved from... (drumroll)... cockroaches! It's rather harder to see the resemblance, except for their diet... both are capable of digesting (with help from endosymbiotic microbes) pure cellulose. And while termites don't really resemble ants either, parallel evolution has chosen the same strategy of retaining the wings for the fertile individuals who go on a nuptial flight and then discard their wings and try to found new colonies.

jbotz commented on Ask HN: What's Your Useful Local LLM Stack?    · Posted by u/Olshansky
CamperBob2 · a month ago
NEVER recommend using "pip install" directly, always recommend "python3 -m pip install"

Just out of curiosity, what's the difference?

Seems like all the cool kids are using uv.

jbotz · a month ago
When you do `python -m pip install` you're going to get a version of pip that has the same idea of what its environment looks like as the python executable, which is what you want, and which isn't guaranteed with the the `pip` executable in your path.

As an aside, I disagree with the `python3` part... the `python3` name is a crutch that it's long past time to discard; if in 2025 just typing `python` gives you a python 2.x executable your workstation needs some serious updating and/or clean-up, and the sooner you find that out, the better.

u/jbotz

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