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pja

6,077 karma · joined April 24, 2011

Occasional computer wrangler
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pja··on Neolithic boats found in the Mediterranean reveal advanced nautical technology
Yes. GG&S might be wrong, but the claim that it's explicitly racist has always seemed to me to be an astonishingly tendentious misreading.

It turns out that there are lots of readers out there who wilfully confuse "is" for "ought". Even when an author goes out of their way to emphasise that they are only describing their view of reality, not in any way assigning virtue to it.

pja··on Lie-to-children
An incomplete description of a more complex reality, perhaps.
pja··on The FT's chief executive on AI, "loyalist" readers, and its U.S. expansion
Weirdly, the village the town was built around had that name originally: https://en.wikipedia.org/wiki/Middleton,_Milton_Keynes

Milton is a contraction of Middleton & Keynes was from the Norman de Cahaines family. There are a few other X Keynes dotted around the UK, all presumably on lands gifted to the de Cahaines family after the Norman conquest.

pja··on The FT's chief executive on AI, "loyalist" readers, and its U.S. expansion
People who care more about finance & economic analysis than they do about signalling political affiliation. There’s strong overlap with the WSJ in the USA I would imagine, except the WSJ is notoriously pro-Republican, whereas the FT has supported various UK parties across the political spectrum & the FT has a more internationalist focus.

They also really care about their Arts with a capital A reporting.

If you want a more eclectic approach to financial reporting, the FTAlphaville blog at ft.com/alphaville is free (registration signup required) & often well worth reading whether you read the main paper or not.

pja··on Better PC cooling with Python and Grafana
Yes, you can do the same with the 5000 series. The 5600X can be restricted to 45W max tdp & the 5800X to 65W.
pja··on Updating Gov.uk’s crown
Quite apart from Magna Carta, the outcome of the Civil War determined very effectively whether the British Monarch had divine right to rule. In the negative.
pja··on Trident missile test fails for a second time in a row
A little digging suggests that photo was taken at the end of a six month deployment. Which probably explains the state of the hull - it’s absolutely covered in barnacles & other marine growth.

The crew must have been shattered. Six months is a long time to spend at sea.

Links: https://www.popularmechanics.com/military/navy-ships/a452796... https://www.navylookout.com/royal-navy-nuclear-deterrent-sub...

pja··on A new Debian package helper: debputy
Binary deb packages are extremely simple. It's just a cpio archive with a couple of tarballs & almost every system integration is implicit. Very easy to build by hand.

Last time I shipped a debian package to clients we just had the build system spit out a ready made binary .deb. Much, much easier than faffing about with dhbuild etc.

pja··on Zed, a collaborative code editor, is now open source
Ripped from my .emacs:

    (setq gc-cons-threshold (\* 100 1024 1024) ;; GC sometime after allocating 100Mb 
          read-process-output-max (\* 1024 1024)
          company-idle-delay 0.0 ;; company completions should be fast
          company-minimum-prefix-length 1
          lsp-idle-delay 0.1)  ;; clangd is fast
    (run-with-idle-timer 2 t (lambda () (garbage-collect))) ;; Trigger a GC after 5s of idle time
This is something of a hack of course, but it works & memory is cheap. You might want to push the GC threshold back down after emacs startup - a GC that fires early is a GC that does less work per invocation & is therefore less likely to cause perceptible stutter.
pja··on Disney, Warner, Comcast, and Paramount are contemplating cuts, possible mergers
These are all great series, but they are also on three different streaming services, which from a consumer POV is exactly the problem. Everybody wants a marquee drama series to draw the punters in, but the punters don’t really want to be shelling out for every single streaming service just to watch the one good thing on each of them.

So a sizeable chunk of the potential audience picks one channel at a time & chops and changes between them, cutting revenues by 4x, or else they drop them altogether because it just gets boring trawling through the piles of low-grade content trying to find something worth watching.

pja··on Do black holes have singularities?
No, I understand precisely.

The context of my original comment was someone expecting that a cup of water at the centre of the earth would explode due directly to gravitational effects. This is wrong, as I pointed out.

Even on the surface of the earth it is the air pressure that prevents the water boiling off instantly, not gravity itself. On the surface of the earth that air pressure is due to the effect of gravity on the atmosphere, but you can supply that air pressure by a number of other means in other places. The air pressure inside the ISS is not there due to gravity after all! I suggest to you that if we can posit a hole at the centre of the earth, then we can fill it with air at 1atm if we want to - we are in the realm of mathematical models here, not reality after all :)

pja··on Do black holes have singularities?
Fill the hole with air at 1atm & it’ll sit there very slowly evaporating though, same as it does on the ISS or on the surface of the earth. Gravity is irrelevant.
pja··on Do black holes have singularities?
No, it won't explode.

If you somehow made a spherical hole in the middle of the earth and placed a cup of water inside the hollow (anywhere inside, doesn't have to be the centre) it will just sit there: Newtonian gravity is 0 inside a uniform spherical shell of mass. (Einsteinian gravity is probably mostly 0 but you'll get frame dragging effects if the shell is rotating I would imagine.)

You can do the maths to prove this yourself if you want.

pja··on Conway's Game of Life is omniperiodic
He did - see the replies to the top tweet.
pja··on Lobsters
If you ask politely on the IRC & share a bit about who you are it’s fairly likely someone will send you an invite. No guarantees though - the likelihood probably depends at least partially on how long it’s been since the last bunch of self-promoting spammers set up their own little invite ring after being invited in...
pja··on The Bond villain compliance strategy
The rules were always clear, it's just that crypto people didn't like them & wanted new rules specially made for them.

Crypto exchanges were always money transmitters that were required to follow KYC regulations, ICOs were always securities & needed to follow SEC regulations. And so on & on.

Using cryptography doesn't make you magically immune to regulation.

pja··on GTK: Introducing Graphics Offload
GSK is the GTK Scene Graph Kit: https://en.wikipedia.org/wiki/GTK_Scene_Graph_Kit
pja··on Spain lives in flats: why we have built our cities vertically
I was referring to the truck here, not the individual bars putting their bins out. They closed relatively early for Spain, as it was mid-week & not high-summer.

The truck then came crashing down the street a little later...

pja··on Spain lives in flats: why we have built our cities vertically
This was midweek in the autumn after the bars had all shut & everyone had gone home. It might even have been a bit later! Either way, my point is that it was the worst possible time to be upending bins full of glassware in a residential area. That noise was far louder than the people in the bars had been an hour earlier.
pja··on Spain lives in flats: why we have built our cities vertically
The Spanish just don’t seem to care about noise at the institutional level. I spent a week in a small Spanish city last year & the local rubbish collection went down the street outside the door, pouring bins full of bottles from the local bars in the back at midnight. Midnight! Just when even the Spanish are trying to get to sleep.

Co-incidentally, there was an article in the Spanish national press that week detailing all the ways in which noise in Spanish cities was deleterious to health & wellbeing and asking why no-one ever did anything about it. Constant noise just seems to be accepted as being an inevitable part of life, rather than something to be fixed.

pja··on Potato Diet Riff Trial: Sign Up Now, Lol
“An easy method to reduce calories” is fairly revolutionary in the academic diet world. Consistently losing weight is something that people find hard to stick to. A diet that is safe & makes it easy is in and of itself something very interesting.

HN types tend to take the “just eat less, lol” attitude, but in the real world that just doesn’t work very well for the majority of people. There’s no point arguing that people “should” be better at it: they aren’t, for sound biological reasons. Forcing them to behave otherwise & then blaming them when it doesn’t work is simply cruel. Hence the idea that a diet that lets obese people steadily lose weight without any other interventions is a bigger deal than you’d otherwise expect.

pja··on Potato Diet Riff Trial: Sign Up Now, Lol
The difference is that people report that the potato diet is /easy/. No cravings, no endless hunger & having to force yourself to calorie count and stop eating when you hit your target. Eat as much as you like, when you like.

That’s radically different from other diets.

pja··on Use YouTube to improve your English pronunciation
I think you might argue that the a in bade is stressed whereas the a in made is unstressed?

Otherwise I agree, there’s no difference between the two in my dialect.

Wiktionary suggests that it can be a homophone with bad in some dialects though, so perhaps that’s what the author was thinking of?

pja··on Use YouTube to improve your English pronunciation
Neither!
pja··on Ubuntu Linux snuck into high-end Dell laptops
IIRC with the current XPS range only the "pro" variants offer you the choice of a Linux install.
pja··on Tesla owner received a $21,000 bill after the battery was damaged by rain
BIK rate on EVs is 2% in the UK & there are probably a lot of finance/IT types in Edinburgh who were happy to funnel their income into what was effectively a half price car if you were a higher rate paying consultant. For a while Tesla was the only real EV option available in any kind of numbers.
pja··on GHC 9.8.1
Oh wow. I’ll have to recompile some of my old AoC Code to see how fast it really runs now!

Like you I had assumed this was simply runtime startup / teardown overhead.

pja··on YouTube isn't happy you're using ad blockers – and it's doing something about it
Yes, good point: that could also be a good (legal) reason for the bundling of YT Music with no-ads YouTube.
pja··on A Raspberry Pi 5 is better than two Pi 4S
An uncooled Pi5 is faster than a Pi4 running the same code.

A Pi4 is still a perfectly fine microcomputer.

pja··on YouTube isn't happy you're using ad blockers – and it's doing something about it
I wonder if there's a good reason why Google doesn't offer a subscription option for YouTube alone? They tried it once (YouTube Red) some time ago & dropped it fairly quickly.

Totally uninformed speculation: maybe they found that it was their most profitable viewers that were paying for YT Red? Which in turn would mean that any subscription program would be a net loss over relying on ads for income.

You could just say "charge more" of course, but maybe that higher charge is more than those customers are actually willing to pay for YouTube?

Which in turn would mean that ads will always be more profitable than subscriptions for Google.

In this model YouTube Premium, which includes Music, might be sufficiently expensive that it ends up profitable overall thanks to the bundling of YT & Music together.

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