arkuat: masked up (Default)
So for a long time now, I've been poo-pooing the idea that life originated in shoreside tide pools, because I had adopted the opinion that life originated in deep suboceanic volcanic vents.

But it turns out that life probably formed before the ocean was even fully formed (i. e. early in the stages in which Hadean Earth was still outgassing lots of water and/or hadn't received all of its cometary intake yet), so it looks like the actual truth is somewhere in between the two ideas: lakes and ponds forming on the surface of fresh hot lava on top of barely-formed crust VERY early in the stages of cooling. It's a little like an underwater volcanic vent, and it's a little like a tidepool!

Here's an interesting paper that helped lead me to this conclusion:

Toner, J. D. and D. C. Catling (2019), A carbonate-rich lake solution to the phosphate problem of the origin of life. Proceedings of the National Academy of Sciences, 1-6. DOI: https://doi.org/10.1073/pnas.1916109117

(ETA: for those who don't know, phosphorus is needed for ATP and ADP, which all living things (yes, all) use to store and deploy energy internally, and also for RNA and DNA (yes, all), which you probably know about, and is also needed for cellular and intercellular membranes (again, yes, all such membranes in every organism) in the form of phospholipids. So, about as fundamental as carbon in its own way, but much less common than carbon. Also, it's a lot harder for stars to make than most atoms as light, for nuclear astrophysics reasons that I've read about but barely understand myself.)

And here's a youtube video that got me thinking about the whole phosphorus problem (including the problem of its nucleosynthesis), and suggests it as the resolution of the Fermi paradox:

https://www.youtube.com/watch?v=oPU9jeQbTOU

Looks as if we may have gotten over the Great Filter hump a long damn time ago. Unfortunately this means that aliens are gonna be pretty scarce, and it definitely shores up the rare Earth hypothesis (i. e. the Solar system is probably unusually enriched in phosphorus).
arkuat: masked up (Default)
WHY does Minnesota bother to require printing all the UNCONTESTED judicial elections on the ballot? What conceivable good does this do anyone?

It would make sense if they actually counted write-in votes, but I learned recently that Minnesota does not count write-in votes unless requested to do so by the particular write-in candidate, and that they only count write-in votes for candidates who have formally requested such counting.

I happen to know (I used to be one of them, but that's not the only reason) that there are a lot of people out there who are afraid their ballots will be discarded, and all of their votes ignored, if they don't vote in every single contest on the ballot. I happen to know now that's not the case (at least not in Minnesota), but I remember the time I wasted trying to research these useless votes in uncontested races where the press published practically nothing about the candidates in these races. Multiply that by all the other poor souls who haven't discovered Naomi Kritzer yet! And no, Naomi doesn't bother researching these contests that have no effect on anything either. It would be a waste of everyone's time.
arkuat: masked up (Default)
I have a new job after a period of un(der)employment that predated the pandemic by many months. It has been a couple of weeks now, and today was the first day I ended my shift not feeling totally drained. If this keeps up, I'll be employed through November 3 of this year. The bad news is that it pays only a little bit more than Minneapolis's target minimum wage. The good news is that it involves the same skills I was using in my career before (answering questions by phone and email, usually looking up a lot of things in the process), except that this time it's all about elections and the rules by which they are conducted, instead of how to operate huge fast reliable data-storage-and-retrieval systems, which I've learned in the last ten years are under-regulated and being put to nefarious purposes. For this reason, I enjoy the actual work much more, even though it pays much less!

Bruce Schneier has repeatedly made the point that we need laws requiring the deletion of old data held by third parties (at least unless they get the explicit consent of the subject of the data for its preservation). He's right. We do.
arkuat: masked up (Default)
And I thought the long reply I made on someone else's post might make a good post. It's a story to explain how I got so good at identifying northern constellations by naked eye, especially in a sky that is a little bit light-polluted, but not too much so (because that's the environment in which I learned the constellations--finding them in a truly dark sky full of unfamiliar stars is actually more difficult for me than finding the bright ones, the only ones that are visible, in a city sky).

So when I was in second or third grade, I seem to have attained an understanding of inertia with regard to angular momentum. I knew the Earth spun (and pretty much everything else spins) because it's spinning in the first place, and very difficult to stop. But I kept pestering my elementary school teacher with questions about what started it spinning in the first place. (Nowadays, I'd ask, where did the conserved angular momentum come from, and I'm pretty sure that's cosmology and maybe even involves quantum spin, but [personal profile] quadong would know better than I about the latter.)

At the time I lived in Elgin, home of the Elgin Observatory built by the old watch factory, which observatory was at the time owned by school district U-46. So my teacher, or someone at school, suggested I address my question in a letter to Charles Tuttle, the then director of the observatory. I did so (my mom typed it up for me). I don't remember his answer, but I was invited to take after-school classes in astronomy there, which I did during third and fourth grade. We ground mirror-blanks for telescopes, and studied constellations in the planetarium. Now, planetarium constellations are not quite as fascinating to the unlearned as real constellations, and when test-time came, I found that I could only identify Orion and (oddly?) Delphinus. I found this bad test performance humiliating, and that's whence my motivation came in the 1990s when I spent a lot of time outdoors at night studying real constellations.

Now I know the northern constellations so well that the first item on my bucket list is a long stargazing trip to the southern hemisphere, so that I can learn the southern sky as well. I'm mostly a naked-eye and binoculars person, the same way [personal profile] jiawen is such a magnificent telescope and astrophotography person.
arkuat: masked up (Default)
And yes, it's because of the manifesto that was posted at Minicon. Now I just have to figure out how to turn off that twitter feed.

My tweets

Jan. 19th, 2019 12:00 pm
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  • Fri, 21:14: Wow. I discovered something pretty good on youtube. (A 2015 review of duolingo.) https://t.co/ZP83upGdbQ
  • Fri, 23:47: RT @saladinahmed: hey guess what 'western civilization' is a recent historical construct and neither Aristotle nor Shakespeare would know w…
  • Fri, 23:49: RT @SER1897: Dems not showing up in 2014 cost us Garland, gave us Gorsuch and Kavanaugh, and now has cost federal workers their pay. McConn…

My tweets

Jan. 18th, 2019 12:00 pm
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  • Thu, 14:23: RT @itscaitlinhd: First DHS said I made up family separation, that sources were lying to me and giving fake documents. Then they said it la…
  • Thu, 14:24: RT @srl: Breaking news: A federal judge blocked the cuts to early voting Wisconsin Republicans passed in a controversial lame duck session…
  • Thu, 18:59: RT @adrparsons: I remember disabled people criticizing all of these films before social media. You just don't talk to us or read our publi…

My tweets

Jan. 17th, 2019 12:00 pm
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My tweets

Jan. 16th, 2019 12:00 pm
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  • Tue, 17:08: RT @LindsayPB: So. This letter about a "Green New Deal" expressly excludes nuclear energy, and any means of capturing and storing CO2. It'…
  • Tue, 17:40: RT @AngryBlackLady: Bill Barr says that as the father of 3 daughters, he takes very seriously sexual assault. But if he didn’t have 3 daug…
  • Tue, 17:41: RT @BootsRiley: Robots will not replace workers. Here's why: robots don't buy stuff. They need workers 2 also be the market to which pro…
  • Tue, 17:51: RT @DavidAstinWalsh: The belief that the Internet was a liberatory force. https://t.co/UP1agfn0kw
  • Wed, 01:11: Al Green recorded a cover of the Bee Gees "How Can You Mend a Broken Heart." As a child I was subjected to listen t… https://t.co/bPfqQt3R6v
  • Wed, 01:27: RT @ann_leckie: If you ask me, waaaaay more "Great Men of [field]" than we realize are actually coasting on the achievements of marginalize…

My tweets

Jan. 15th, 2019 12:00 pm
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  • Mon, 16:53: RT @AlexSteffen: The whole idea that bold, rapid climate action comes with dire costs is only barely kind-of true if we: a) refuse to coun…
  • Mon, 16:54: RT @EmilyGorcenski: It's noteworthy here that the ADL is calling out Rep. Steve King's connections to Faith Goldy, because Goldy herself is…
  • Mon, 16:56: RT @LindsayPB: So here's a fun fact: back when steam engines were in their infancy, one of the earliest (if not the first) adopters of much…
  • Mon, 16:57: RT @LindsayPB: This trend of government being the polite stewards for big business and the extremely rich has got to stop. You're the godd…
  • Tue, 11:51: RT @xandernaut: exploiting the public domain for profit and then locking everyone else out of it for decades https://t.co/IDvqw2skoV
  • Tue, 11:51: RT @theangrymick: Eric Garner was approached, and subsequently killed, by police for selling single cigarettes without a tax. https://t.co/

My tweets

Jan. 14th, 2019 12:00 pm
arkuat: masked up (Default)
  • Sun, 21:30: RT @DrJenGunter: The smallpox vaccine was given at birth in the 1960s https://t.co/TnIUr0tUsB
  • Sun, 21:33: RT @mtsw: It's sort of frustrating how AOC demonstrated the huge upside to getting left candidates into the legislature to replace careeris…
  • Sun, 21:35: RT @leeflower: The Al Capone Theory strikes again: a guy who took credit for Rosalind Franklin's work also turns out to be a gross racist c…
  • Sun, 21:39: RT @EmilyGorcenski: It should be a bigger story how many media outlets laid off journalists to pivot to video entirely because Facebook com…
  • Mon, 09:24: RT @jbouie: It’s genuinely kind of strange that impeachment is still kind of a spicy take when the measure was envisioned specifically for…

My tweets

Jan. 13th, 2019 12:00 pm
arkuat: masked up (Default)
  • Sun, 02:17: RT @jennycohn1: According to this article, to correct a false claim (misinformation), it is best to present the facts first, warn about the…
  • Sun, 02:31: RT @ParkerMolloy: But what have we learned today, class? Don’t trust British tabloids with a history of making things up. (And don’t trust…
  • Sun, 02:32: RT @MykeCole: To everybody who said I was overreacting, histrionic and jumping at shadows when I said Trump was an Russian intelligence ass…
  • Sun, 02:46: RT @HillaryClinton: As of today, this shutdown is the longest in history. The costs are already high: People are missing paychecks, losin…

My tweets

Jan. 12th, 2019 12:00 pm
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  • Fri, 12:52: RT @NaomiKritzer: If you have a Republican Senator, tell them you blame them for the shutdown. https://t.co/rbtUXFCCZ6
  • Fri, 12:52: RT @samswey: A Border Patrol agent shot 4 Hispanic women in two weeks because “no one would care about them” and it’s barely even being rep…
  • Fri, 17:07: RT @MAPS: Happy birthday to the late Dr. Albert Hofmann, the #psychedelic chemist who first synthesized #LSD and #psilocybin. Today, we cel…
  • Fri, 17:13: RT @Leahgreenb: Republicans controlled the House for two years and they never considered wall funding to be an "emergency" during that time…
  • Fri, 17:16: RT @LindsayPB: *coughs* can we start putting money into nuclear energy and walkable cities and electrolysis steel production and carbon ca…
  • Fri, 22:32: I'm pretty sure I'm going to post this anyway, although I haven't finished watching the whole thing yet. I'm postin… https://t.co/L0FcFbxWe7

My tweets

Jan. 11th, 2019 12:00 pm
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My tweets

Jan. 10th, 2019 12:00 pm
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  • Wed, 15:11: RT @dmeaser: THREAD: I'm just an advertising guy, but thought I'd put a marketing lens on the news of Manafort sharing "polling data" with…
  • Wed, 22:35: RT @LeavittAlone: My favorite thing about the whole tartan thing is how much of it was invented out of whole cloth in the 19th century and…
  • Wed, 23:02: RT @jennycohn1: Brian Kemp’s hand picked SAFE Commission plans to vote on a new electronic voting system TOMORROW, Jan. 10. Kemp is gunning…

My tweets

Jan. 9th, 2019 12:00 pm
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  • Tue, 15:53: RT @martinevanelk: I like to point out to people that for 15 euros a year, you can have an on-line membership to the Dutch royal library, w…
  • Tue, 16:28: RT @TiemannAmelia: Doing research on the rise of the anti-nuclear movement and I can't help but notice that all the arguments are virtually…
  • Wed, 02:07: Call me old-fashioned, but Jethro Tull's "Reasons for Waiting" is still among my favorite songs.

My tweets

Jan. 8th, 2019 12:00 pm
arkuat: masked up (Default)
  • Mon, 17:32: RT @KaivanShroff: When Obama asked for network coverage to discuss immigration back in 2014, he was denied. It is totally absurd for netwo…
  • Mon, 22:09: RT @DrEugeniaCheng: Some of my organising tips: 1. Leave everything exactly where you last used it. Chances are that's where you'll next us…
  • Mon, 22:12: RT @KaivanShroff: WRONG INCENTIVES: Obama to Media: “Having you in this building has made us work better.” **denied airtime to educate th…

My tweets

Jan. 7th, 2019 12:00 pm
arkuat: masked up (Default)
  • Sun, 12:33: RT @DuckDuckGo: To test AI babysitter screener, Predictim, @bcmerchant scanned his family, friends, babysitter, and Predictim's CEO. He fo…
  • Sun, 14:28: RT @LindsayPB: Exactly. Whatever the intention, a lot of British housing projects ended up degenerating into sink estates with few jobs, fe…
  • Sun, 14:32: RT @AOC: This admin clearly had enough extra money to spontaneously build child detention camps all along the southern border + conduct a m…
  • Sun, 14:33: RT @leahmcelrath: Clear speech. I agree with everything he said. https://t.co/Ya2Ugwu7TU
  • Mon, 01:46: RT @NaomiKritzer: Here's when you can tell me you don't like something I like: When we are both at a banquet with a set menu and you notic…
  • Mon, 01:51: RT @coffeeandtheart: I'm a disabled illustrator, and I wanna see more disabled folks in art. If you're disabled (visible or invisible, you'…
  • Mon, 01:52: RT @NaomiKritzer: Hot tip: if you see some clickbait-y article that gives you a three-paragraph version of a story that makes no goddamn se…

My tweets

Jan. 5th, 2019 12:00 pm
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My tweets

Jan. 4th, 2019 12:00 pm
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  • Thu, 19:45: RT @mtsw: This is such a bananas thing conservatives believe about a culture that was doing the Inquisition, witch-burnings and anti-Jewish…
  • Thu, 19:46: RT @jennycohn1: Your settlement did not ban barcode balloting or specify paper ballots marked by HAND & thus allows the barcoded computer-m…
  • Thu, 19:47: RT @bluemazatl: Another Indigenous leader assassinated. So many have been killed for standing up for the land and indigenous people. Alejan…
  • Thu, 19:59: RT @KamalaHarris: We should be encouraging all voters to participate in our democracy, not making it harder for them to cast their ballot.…
  • Fri, 09:55: RT @Lollardfish: How many children has your organization killed? You may not know, but historians will find out and will make sure no one…
  • Fri, 09:55: RT @LindsayPB: Putting my cynic hat on, I have a bad feeling that if the Green New Deal passes with a reductive definition of "renewable" i…
  • Fri, 09:56: RT @lynnv378: She has received NO attention in the media. None. https://t.co/wUM2NT8js7
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