monotremata

joined 2 years ago
[–] monotremata@lemmy.ca 1 points 3 days ago

I mean, this was my first question as well. If you say "I don't trust that guy with my kids," then you also should not be leaving that person alone with your kids. If you do leave him alone with your kids, people aren't wrong to say that you very much are trusting him with them.

So I think it's legitimate to ask whether they mean they "don't trust Chinese and US firms with their data" in the sense that they do not provide their data to them, or just in the sense that they do give them a bunch of data, and then feel misgivings about it.

Which, y'know, it's something you have a limited degree of control over, certainly, and we don't want to fall too much into blaming the victims. But as someone who didn't manage to actually get off Facebook until last year, I definitely felt for a long while before that like I was complicit in my own exploitation, and contributing to a societal problem. I think even the people still there know that cancelling it is the low-hanging fruit in terms of reducing the amount of data in the hands of dubious firms.

[–] monotremata@lemmy.ca 1 points 6 days ago

I think that might be pleurisy instead.

[–] monotremata@lemmy.ca 11 points 1 week ago

I think the idea is that this particular drug isn't suitable as birth control, but having identified that this mechanism/biological pathway can work for birth control, they can look for a less toxic compound to achieve the same effect.

[–] monotremata@lemmy.ca 4 points 1 week ago

I dunno if that's always the case. I still love The Phantom Tollbooth.

On the other hand, I remember being really frustrated by a phrase from another book. (I think it was "Kneeknock Rise"? I remember exactly nothing else about this book, though, so it might not be that.) It was a description of a scene, and it said the dog was asleep, "arms and legs akimbo." Now, I was in... maybe third or fourth grade, so I had never encountered the word "akimbo" before, and asked my parents what it meant. They explained that "arms akimbo" was basically the only phrase in which it's used, and it means having your arms out to your sides with your elbows bent and your hands on your hips. But this just confused me further, because the book said "arms and legs akimbo." I had no idea what it was trying to describe, and could not picture it. I tried to draw a picture of what it seemed to be describing, and continued to find it baffling. My parents agreed that was odd, and suggested I talk to my teacher about it. The teacher was very dismissive, though, saying "well, obviously you've never had a dog, or you'd know exactly what they're talking about." Which...what? Why would you even say that to a curious kid? Couldn't you at least draw a doodle of what it looks like?

So yeah, being forced to stick with a book you don't like does leave a very strong negative impression.

[–] monotremata@lemmy.ca 1 points 1 week ago (1 children)

Extreme solopsist?

[–] monotremata@lemmy.ca 2 points 1 week ago

The song of my people.

[–] monotremata@lemmy.ca 4 points 2 weeks ago (5 children)

That would be the short story Harrison Bergeron by Kurt Vonnegut.

[–] monotremata@lemmy.ca 11 points 2 weeks ago

Yeah, this is what I was going to call out. Calling it "100% solvable by humans" and saying "if human scores were included, they would be at 100%" when 20-60% of humans solved each task seems kinda misleading. The AI scores are so low that I don't think this kind of hyperbole is necessary; I assume there are some humans that scored 100%, but I would find it a lot more useful if they said something like "the worst-performing human in our sample was able to solve 45% of the tasks" or whatever. Given that the AIs are still scoring below 1%, that's still pretty dark.

[–] monotremata@lemmy.ca 4 points 3 weeks ago

I built one, but it was a (top-down) resin printer, so I don't think I have any useful advice to offer. Also, I kinda burnt out on the project after I came in one morning and found the resin had melted the vat and leaked onto the floor--somehow I just totally failed to consider that the solvents in the resin could obviously dissolve a lot of plastics. Huge mess, huge pain to remediate. At least it was a concrete floor. I got a replacement vat in glass, but I never worked up the will to work on it again. It did basically print before that, but I had a lot of off-layer curing and didn't get to do much work on tuning that in before the accident.

[–] monotremata@lemmy.ca 4 points 3 weeks ago

username checks out

[–] monotremata@lemmy.ca 2 points 3 weeks ago

Yep. I've only got three APs, and one is by the modem and router, so it's really just two long wires, and one of those is to my office, which is also where my main desktop PC is, so I needed that wire anyway. The other one was annoying, and I had to drill a couple holes for it as well as exploit a laundry chute, but all that was ten years ago, and having pretty complete wifi coverage since then has been worth it.

The one weak spot is the kitchen, where there's coverage, but it tends to be a bit slow. I just decided to upgrade my bedroom AP to Wifi 6 (from AC), though, and I might try switching the old unit over to mesh mode and mounting it to cover the kitchen. Mesh involves two wifi links so it's a bit slower, but the connection strength will probably make up for that. It's worth the experiment, at least.

[–] monotremata@lemmy.ca 9 points 3 weeks ago (2 children)

I turned off wifi on my router and instead use multiple wifi access points connected to the router by ethernet. It's way easier to get good coverage and speeds that way.

71
Moire/Vernier Radius Gauge (www.printables.com)
submitted 9 months ago* (last edited 9 months ago) by monotremata@lemmy.ca to c/3dprinting@lemmy.world
 

I previously posted this on Reddit, since it reaches more people there (and I didn't want to post everywhere at once, as it makes it harder to keep up with the comments). Sorry about that.

This is a tool for measuring the radius of a circle or fillet from the outside; it uses a moire pattern of slots and lines to enable a direct reading of the values from a vernier scale.

A video of a broken-open version makes it a little easier to see how the moire and vernier features operate: https://i.imgur.com/Ku2nBkq.mp4

More photos of a slightly earlier version are here, including the tool being used for actual readings: https://imgur.com/gallery/moire-vernier-radius-gauge-design-3d-printing-ajy0GBg

I was inspired by this post: https://makerworld.com/en/models/1505553-adjustable-chamfer-gauge#profileId-1575605

which is a gauge which measures chamfers using a sliding probe. The same user had also posted a radius gauge, which worked similarly, but it was much larger, using gears and two racks in it to amplify the motion, which I didn't initially understand. I asked about it, and he pointed out that, because of the geometry of the probing, the slider only moves a small proportion of the length of the actual radius being measured--about (sqrt(2)-1), or 0.414mm per mm of radius. Since we're drawing the marks with a 0.4mm nozzle, it's not really possible to make marks that close together and still have them readable.

So I thought, I bet you could fix that with a vernier scale. And then I had several thoughts all at once--that a lot of people are kind of scared off by vernier scales, and also that I bet you could fix that with 3d printing using the relationship between moire patterns and vernier scales. I don't think I've seen this done before, but it probably wasn't really practical before 3d printing. Arguably it's not entirely practical now, as the deep slots and parallax effects can make it a little hard to actually see the markings. But it was a fun experiment, and I think the result is eye-catching enough that it's probably got some educational value in getting people to actually think about how it is that vernier scales work. (It might even have educational value for things like number theory...e.g., it's important that the vernier factor involve relatively prime numbers, in this case 9 and 10. Can you see why?)

Anyway, hope folks here find it interesting too.

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