@wrog@mastodon.murkworks.net
@wrog@mastodon.murkworks.net avatar

wrog

@wrog@mastodon.murkworks.net

genuine Internet Old Fart (if you're under 40, I have email that's older than you are).
sometime Democratic activist/party-hack & professional clueless, middle-aged white guy. He/him.
Math/computer-science degrees + physics courses. Music theorist by marriage.
Seattle area resident; orig. from New Jersey. Former Microsoft.
#LambdaMOO #perl #scheme #AlgebraicTopology #concurrency #Princeton #Cambridge #Stanford #autism #AbsolutePitch #RomanHistory #BoardGames #atheist #piano #microtonal

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glyph, to random
@glyph@mastodon.social avatar

More writing today! One of my now very-outdated posts sometimes scares people into thinking that text editors are still in a security crisis, so I wrote and linked an update: https://blog.glyph.im/2024/01/no-more-editor-malware.html

wrog,
@wrog@mastodon.murkworks.net avatar

@glyph

Note that you can still send somebody email or a text file containing

(mapatoms #'fmakunbound)

something that will almost certainly never be "fixed".

[in case it's not obvious, you do not want to ^X^E this in any emacs session you care about]

[... hm, 20 minutes after the Kill Task, there seems to be some delightful remaining wreckage in process space that Windows is still trying to clean up; I think I'll have to reboot...]

johncarlosbaez, (edited ) to random
@johncarlosbaez@mathstodon.xyz avatar

I just learned about the idea of a 'pair-instability supernova'. It's a way for a star that's 130 to 250 times heavier than our Sun to go boom. It can even explode so violently that it doesn't leave behind enough material to form a black hole! This is why we don't see many black holes in this mass range.

It relies on how light can turn into matter and antimatter.

Here's the idea:

When a star is this huge, its core can get so hot that the radiation inside is mainly gamma rays. These are so energetic that some turn into electron-positron pairs. This reduces the radiation pressure which helps hold up the star. So the star begins to collapse. This makes the core even hotter, producing more gamma ways, but these again turn into electron-positron pairs... so we can get a runaway reaction!

The collapse compresses the star's core so much that it becomes a thermonuclear fusion bomb, burning up all the star's fuel in about 2 seconds. So much energy is released that the star shoots apart, leaving no black hole or other remnant.

For one supernova seen in 2006, one of the biggest ever, about 40 solar masses of the original star got converted to nickel in this process! That's enough to make a lot of nickels.

This kind of runaway reaction is called a 'pair instability':

https://en.wikipedia.org/wiki/Pair-instability_supernova

It's a bit tricky, because you might think the extra gamma rays would increase the radiation pressure... but apparently for stars in this mass range they turn into electron-positron pairs so fast this doesn't happen. Understanding that would take math, and I haven't gone through that math.

wrog,
@wrog@mastodon.murkworks.net avatar

@johncarlosbaez @grant_h

the real question is what CERN's energy cost for creating antimatter

To be sure, doing it at CERN is obviously a lose, but...

Sun's energy output is around 4.26 billion kg/s, so...

A single orbit with, say, aphelion 42.6 million km (just inside Mercury's) filled with a ribbon of power satellites having an effective width of 20 meters (e.g., use 1km² satellites spaced 50km apart at aphelion) will intercept around

1 kg/s

or

30 million kg/year

i.e., craploads of antimatter once we have any kind of method to make and store it even vaguely efficiently.

Hell, just a single1 km² satellite at that distance gets 6 kg/year

(... yeah, I know, not happening any time soon, but, in principle...)

wrog,
@wrog@mastodon.murkworks.net avatar

@johncarlosbaez @grant_h

If there's some way to do it that doesn't involve particle accelerators, I'd love to hear about it.

Then again, there are any number of ways building particle accelerators in space is way easier than building them at CERN (negotiating land-use rights, maintaining vacuum, etc...).

Meanwhile, we'll have this vaguely circular ring of a million+ satellites, each with its own independent power source and nothing better to do. We just have to find a supply of charged particles somewhere... oh, wait...

(yeah, I know: Not a blueprint. There will be Engineering Issues; we'll have to use both sides of the paper. Still seems doable, eventually.

I was going to say storing it is the Hard Problem...)

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

Such a difference from yesterday ... this one I found to be really easy.

617

➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️

https://www.andrewt.net/puzzles/cell-tower/?p=617

Current streak: 57 (Lanthanum)

wrog,
@wrog@mastodon.murkworks.net avatar

@ColinTheMathmo

hm. this is the first one in a while that gave me a "you would have blown this if you hadn't been careful" vibe (e.g. multiple routes for "certain" and "existing", "UNhappy",...)

Current Streak: 34 (perfect)

617

➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️

https://www.andrewt.net/puzzles/cell-tower/?p=617

cstross, to random
@cstross@wandering.shop avatar

Trump vowed he’d ‘never’ help Europe if it’s attacked, top EU official says:

https://www.politico.eu/article/donald-trump-vow-never-help-europe-attack-thierry-breton/

wrog,
@wrog@mastodon.murkworks.net avatar

@Ulrich_the_Elder @bodhipaksa @cstross

kompromat only works if the target would actually be ashamed or embarrassed by the information getting out.

ned, to random
@ned@mstdn.ca avatar

So I said, "What the entire fuck".

That implies the existence of fractional fucks. It's better to say, "what the absolute fuck".

That would imply the existence of positive and negative fucks.

How about "what the actual fuck"?

That depends if you'd consider the possibility of imaginary fucks.

One must therefore conclude fuckery is isomorphic with the complex field.

I'm afraid I'm gonna have to ask you all to leave the bar.

wrog,
@wrog@mastodon.murkworks.net avatar

@TazPoltorak @ned

the projective fucks would include all of the fucks at infinity

mattblaze, to random
@mattblaze@federate.social avatar

Just for the record, in my opinion it shouldn't be legal for President Biden to order Navy seals to assassinate Donald Trump, and if he did that, I would be OK with him being prosecuted. Trump and I apparently disagree about this, which is weird.

wrog,
@wrog@mastodon.murkworks.net avatar

@xs4me2 @mattblaze

You mean someone like Liz Cheney? We lived, we saw the day, and she simply got voted out of office. Now what?

gregeganSF, to random
@gregeganSF@mathstodon.xyz avatar

Orzel explains with terrific clarity the succession of ever more ingenious ways people found to exploit, not just the Doppler effect, but the Zeeman effect (magnetic fields split electrons’ energy levels by angular momentum) and level shifts due to induced electric dipoles.

wrog,
@wrog@mastodon.murkworks.net avatar

@johncarlosbaez @gregeganSF

I kept thinking I should probably dismiss the problem of storing antimatter as entirely hopeless but now I'm starting to wonder.

(It's the Being Able to Trap Neutral Shit that's coming out of left field for me)

lauren, (edited ) to random
@lauren@mastodon.laurenweinstein.org avatar

In the pilot episode of the classic TV series "I Dream of Jeannie", which aired in September 1968, astronaut Tony Nelson (Larry Hagman), has an unexpected landing on a desert island, where he finds the bottle that contains the genie played by Barbara Eden (who is now 92, still doing appearances, and still looks great!)

When Tony unwittingly releases the genie (whom he immediately starts calling "Jeannie") she initially speaks to him in Persian (Farsi), until he mumbled that he wished she could speak English.

Most observers assumed she was either speaking gibberish, or that someone else had dubbed Farsi for her in that episode. But in reality, Barbara spoke the Farsi herself, having been tutored by a UCLA professor for the show. Interestingly the original plan was for her to speak Arabic, but producer Sherwood Schwartz was unable to find an Arabic tutor in time, so she became a Persian genie instead.

wrog,
@wrog@mastodon.murkworks.net avatar

@lauren

It always annoyed me when I was a kid that they never reran those first-season episodes in syndication (I'm not quite old enough to have seen the 1st run) so I never saw them until maybe a year ago. (In retrospect, it's obvious why: they're quite weird. First season has a general who is different from the one you see in the rest of the series, whose daughter is Tony's fiancée with the first 4 episodes riffing off of that...)

wrog,
@wrog@mastodon.murkworks.net avatar

@lauren

hm. I guess it got colorized for the DVD release

moira, to HashtagGames
@moira@mastodon.murkworks.net avatar

Two sailing ships cruse around the Pacific Ocean for a while, then there's a surprise ending.


wrog,
@wrog@mastodon.murkworks.net avatar

@moira

One steamship cruises across most of the Atlantic Ocean, then there's a non-surprise ending

(I guess I need to learn the rules to this....)

GW, to Women
@GW@newsie.social avatar

#Gaza, a Ravaged Land, and People

The images of Gaza resulting from a blindly destructive military operation that kills thousands of #innocent #women and #children haunts any #peace-loving person of the world. The level of destruction waged by the #Israeli #military is greater than in any recent conflict, and has resulted in over 20,000 #deaths and incalculable physical destruction. Will there be an end to this #madness?

https://www.counterpunch.org/2023/12/28/gaza-a-ravaged-land-and-people/

wrog,
@wrog@mastodon.murkworks.net avatar

@JRFreeman @GW

"Each side believes God gave them The Holy Land, all of it"

It's actually worse than that. They are both referring to the same gift "event" in Exodus as applying to them. Islam, Christianity, and Judaism are essentially the same religion from 30,000 feet, same god, same cosmology + a large body of shared scripture. Christianity is the Greek version, Islam is the Arabic version. (translators added new material, but same core).

That is why Jerusalem is a holy site in Islam, because as far as the Muslims are concerned they are Israelites, i.e., all of the "history" from Genesis on up through Chronicles, Kings, Maccabees, etc... the entirety of the Hebrew bible is their "history", too.

futurebird, (edited ) to random
@futurebird@sauropods.win avatar

If you could have a new sense which of the following would you choose?

Magnetic Fields: You know which way is North at all times, you can feel a tingle from magnets.

See Heat: You can see warm objects in the dark by heat gradient

Infrasound/ultrasound: You can feel/hear very minor earthquakes and subsonic sounds. You can hear mice.

Deadly Radiation: you can sense how radioactive things are.

You can also tune these things out, it’s not annoying.

wrog,
@wrog@mastodon.murkworks.net avatar

@futurebird

How about:

Neutrinos: You'd always know where the sun is, even in the middle of the night or bad weather (but not really useful for seeing stuff since pretty much nothing blocks them). Also early warning on supernovas.

Voltages: Any hotel room you'd immediately know where the outlets are. Or if there's been a power outage in the middle of the night, you're not having to look for clocks that have gone out. Never get electrocuted by anything (you could safely do fractal woodburning).

Gravity waves/tides: buh. Always know where the sun and Jupiter are? Maybe you could find oil?

wrog,
@wrog@mastodon.murkworks.net avatar

@mcc @futurebird

I'd think that only works if you have artists with the same ability, otherwise it's just going to be random.

Also, 3-d movies probably wouldn't work for you (unless we're talking about the severe-old-school ones that used different colors rather than different polarizations).

moira, to random
@moira@mastodon.murkworks.net avatar

!!!!!!!!!!!!!!!!!

!!! !!!!!!! !!!!!!! !!!!!!!

https://journa.host/@chrisgeidner/111609597286770076

wrog,
@wrog@mastodon.murkworks.net avatar

@moira @FlipperPA @shonin

Things get really weird for a number of reasons. (1) primaries are intra-party functions that the state runs as a courtesy; it's up to party rules to determine which candidates can be listed on the ballot and how; primaries are used to elect delegates; some states, you vote for delegates directly, and it's also up to party rules whether the primary actually counts for anything. State can't actually tell the party how to select its delegates because that violates Freedom of Association.

wrog,
@wrog@mastodon.murkworks.net avatar

@moira @FlipperPA @shonin

(2) for the general election, you're voting for Electors, and unless the "faithless elector" rules can actually be used to prevent electors from casting particular votes (as opposed to punishing them if they vote the wrong way -- which I believe is the only bit that's been tested; not sure about this), again, I'm not sure what leverage the state has here.

wrog,
@wrog@mastodon.murkworks.net avatar

@moira @FlipperPA @shonin

Even if SCOTUS declines to hear the case or upholds the COSC ruling, the CO Republican Party could just amend its Delegate Selection Plan to stipulate that all delegates will be Trump delegates and ignore/cancel the primary entirely. A number of other states have effectively done just this.

wrog,
@wrog@mastodon.murkworks.net avatar

@moira @FlipperPA @shonin

the main value of this is the optics.

An actual court has declared he is an insurrectionist and therefore ineligible per the intent of the 14th.

If SCOTUS replies with the "14th doesn't apply here because it doesn't specifically list `President' and we have this stupid system where nobody votes directly for President anyway", that will be technically correct but won't undo the damage (i.e., how this will play with the independent voters -- the MAGA folks will, of course, ignore it as they've ignored everything else).

ColinTheMathmo, to random
@ColinTheMathmo@mathstodon.xyz avatar

So many words I know well, but fail to see in this format. This took me way longer than it should have, but I got there!

592

➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️

https://www.andrewt.net/puzzles/cell-tower/?p=592

And the streak continues ...

Current streak: 32

Heaving a sigh of relief and going back to work ...

wrog,
@wrog@mastodon.murkworks.net avatar

@ColinTheMathmo

Being so sure it was PRIM & SEMEN took a while to sort out that part of the board

592

➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️

https://www.andrewt.net/puzzles/cell-tower/?p=592

moira, to StarTrek
@moira@mastodon.murkworks.net avatar

Have I mentioned how much I appreciate that Lower Decks has turned my pre-existing winter raincoat into an away-team jacket?

wrog,
@wrog@mastodon.murkworks.net avatar

@annathepiper @moira @rmd1023

to be fair, I don't think anybody in 1967 anticipated we were going to be able to do the Stephen Hawking Thing anywhere near as soon as we did (cf. Issac Asimov in 1950 imagining pocket calculators as this 10,000 years in the future thing when it only took until 1972.)

Note that SNW authors writing in 2021 do not get to use the same excuse.

wrog, (edited )
@wrog@mastodon.murkworks.net avatar

@moira @annathepiper @rmd1023

re "The Problem of Captain Pike"

So... My Talosian headcanon:

They figured out EARLY (in "The Cage") they were going to have to be a LOT more subtle to get anything useful out of the humans -- confirmed once finished going through the records, which went MUCH faster than depicted in the episode.

Guy in Charge of Humans, originally Somebody's Nephew, got replaced very quickly, probably after that 1st illusion with Pike crashed and burned.

They then had to work out a convincing Escape Narrative -- none of the phasers in that sequence were real -- and then some kind of long term plan to get to a Talos redevelopment contract with some federation mining/colonization agency/corporate-entity.

1/n

wrog,
@wrog@mastodon.murkworks.net avatar

@moira @annathepiper @rmd1023

Hunchback Veena = total fake (her ship has records, too; and once she's awake, her memories tell them what to fix, so she's rebuilt just fine).

Yes, they would need a real Veena to know what kind of distress call to send, how to do fake encampment, interact with Pike convincingly, etc.

But she also knew too much, so no way in hell would they ever let her go, and something like HV would have been the only way to convince Pike to leave her behind.

(After: "Okay, assholes, I did EVERYTHING you asked. Vegas Honeymoon. Then you fucking KILL ME ALREADY. That was the deal. Otherwise, it's replays of Saw III and Event Horizon from now on."

13 years later, she's gone, one way or another.)

2/n

wrog,
@wrog@mastodon.murkworks.net avatar

@moira @annathepiper @rmd1023

I'll assume for sake of argument their hallucination range doesn't QUITE reach SB11, otherwise they just subvert entire base from the get go, but...

ability to reach even halfway there includes a HUGE volume of space with lots of ships passing through (why else would SB11 exist?). All sorts of opportunities for mischief AND they'd have learned to be careful about it.

I'm sure Pike's accident was arranged.

Even stipulating they only make contact with people they'd previously encountered (i.e., familiar minds only), e.g., Spock,

... there's 250+ OTHER Cage-era Enterprise crew that would be eligible.

What's #1 or Yeoman Colt doing these days? I bet they'd have issues that could be exploited.

3/4

wrog, (edited )
@wrog@mastodon.murkworks.net avatar

@moira @annathepiper @rmd1023

Thing is, if SB11 were in range continuously for 13+ years, they'd be subverting the shit out of it. There'd never be any need to hijack Enterprise.

So there has to be some reason that wouldn't work.

Best I can come up with it's right on the edge (i.e., not close enough for major skullduggery). But SB folks can pack Kirk onto the shuttle by himself and get him launched (as they actually did), and with Kirk having been awake for 36+ hours, it's that much easier for T4 to plant at least the vague suggestion of Mendez changing his mind and coming along right before Kirk finishes setting the autopilot and dozes off.

And then by the time he wakes up, he's fully in range with "Mendez" in the copilot seat

scubbo, to random
@scubbo@fosstodon.org avatar

Wake up babe, Godwin's Second Law just dropped

wrog,
@wrog@mastodon.murkworks.net avatar

@scubbo

ouch. I can't wait for the 3rd law.

. o O ( "A woke Hitler shall not injure another woke Hitler, nor, through inaction, cause another woke Hitler to come to harm.")

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