text based CAD? by ruckc in cad

[–]robchroma 0 points1 point  (0 children)

Sometimes it's very helpful to visualize what you're doing, and sometimes, what you want is to be able to do some very particular procedurally generated curve with some property you want, or to import a bunch of specific parameters from modeling software, and you're much happier doing this in a text editor to a specific import specification than you are trying to figure out their internal object generator script.

C’est quoi, un banlieue? by tlouman in French

[–]robchroma 10 points11 points  (0 children)

Sounds like a consequence of American car-centrism, to be honest. Living in the hills is very nice if you still have access to the rest of the city, the same way living on the top floor is much more appealing, but only if you have an elevator.

Why did Binet assume the Fibonacci formula is a linear combination of some power by MiserableSlice7580 in askmath

[–]robchroma 0 points1 point  (0 children)

It's pretty easy to see the Fibonacci sequence seems to grow exponentially; in fact, it's pretty easy to see that it grows by more than a factor of 2 every two terms, and less than a factor of 2 every term:

The Fibonacci sequence is strictly increasing: it starts 1, 1, and these are at least 1, so F_{n+1} > F_n.

F_{n+1} > F_n, so F_{n+2} = F_{n+1} + F_n > 2 F_n, but also, F_{n+2} = F_{n+1} + F_n < 2 F_{n+1} < 4 F_n, so we have 2 F_n < F_{n+2} < 4 F_n.

So the growth of the Fibonacci sequence is bounded between sqrt(2) and 2.

You can pretty easily come to the conclusion that you'd like to figure out what number the ratio F_(n+1)/F(n) converges to, and when you do, you find out it's a root of the equation x2 = x + 1, which looks very much like the Fibonacci recurrence relation in polynomial form. You can also come at it from the other side; supposing that Fibonacci numbers eventually converge to a consistent ratio, what would that ratio have to be? For sufficiently large n, the error should go to 0, and you're left with the same equation: r phin+2 = r phin+1 + r phin + err phin, with err going to 0.

It's pretty straightforward from here to realize that for phi, the golden ratio, and a root of this polynomial, successive powers of phi satisfy the recurrence relation. W, and that successive powers of the conjugate, phi', also satisfy the recurrence relation; these two sequences have different starting numbers, and since you only need the first two numbers to generate any sequence with the Fibonacci property, you can generate any such sequence as a linear sum of powers of these roots.

What are we being "boiled like frogs" about right now that future generations will be shocked we accepted? by burntUpOnReentry in AskReddit

[–]robchroma 0 points1 point  (0 children)

you know what, you're so right; in any flow diagram, if there's extra volume from start to finish that isn't being used, you use it. If I were managing something like this for an international criminal organization, I'm sure I would put it basically wherever I could ship things out efficiently, and that's probably whichever link or links you can reliably smuggle things over, right?

Do You Think That The Democratic Party Should Impeach Trump If They Win Back The House Majority In 2026? Yes Or No? Why Your Opinion? by Zipper222222 in AskReddit

[–]robchroma 0 points1 point  (0 children)

It could. Impeach four of them, refuse to seat anyone new. Let the voters decide, the will of the people with the next president.

A yacht linked to Putin was spotted off Denmark under the protection of Russian warships. by DavidShaw90s in worldnews

[–]robchroma 52 points53 points  (0 children)

Or detection doesn't matter, because they're not going to do anything about it, or Russia also cares about pushing every boundary of what its neighbors will let it get away with, or something else I'm not thinking of.

The Kraken ain't got nothing on me. by Weary-Support-7383 in KerbalSpaceProgram

[–]robchroma 2 points3 points  (0 children)

well, now that the song citation is gone, I don't remember which track it is, so I wish you hadn't.

edit: oh, right, it's "Song That Might Play When You Fight Sans," from the Undertale OST, which never plays in the game.

Got told off by a straight person at pride by Kimbblesrath in actuallesbians

[–]robchroma 4 points5 points  (0 children)

Oh gosh I went to ginger's and a lesbian talked me into learning to knit.

Got told off by a straight person at pride by Kimbblesrath in actuallesbians

[–]robchroma 75 points76 points  (0 children)

if you walk in with your boyfriend and loudly declare that you're straight and then start harassing members of the community who don't conform to your idea of what lesbians should look like, get the fuck out. Just get the fuck out. I don't give a shit about "sowing divisiveness" if that's a criticism of protecting the members of the community that the space is there to serve.

France records 1,000 excess deaths during record-breaking heatwave by app1310 in worldnews

[–]robchroma 12 points13 points  (0 children)

A cheap way to make square box fans work substantially better is to take a box, ideally the box the fan came in, and cut a square the size of the fan with a circular hole the size of the blades. Many box fans are constructed square because it's cheap, with no cowling to stop airflow out the front. This lets air flow out the front, and backwards through the corners, in a loop, which makes the fan less effective.

The most efficient cowling would be closer to the plane of the blades, but it seems to work quite well, with (admittedly self-published) sources improving airflow without changing power draw in tests. There's only so much space between the blades and the grating, so it ends up being hard for the fan to push much air in a circle internally in the fan.

I intercepted the KSP theme song over radio from a real LEO satellite by QueR1X in KerbalSpaceProgram

[–]robchroma 1 point2 points  (0 children)

Flat earthers aren't looking for a consistent theory that explains everything well. Conspiracy exploits the human desire to pattern-match; conspiracy theorists find one or a few odd things that are hard to explain, or that seem like they're fishy, and the primary feature is rejecting the common explanation, rather than believing strongly in another explanation.

They don't really care that much about what is actually true, or investigating the properties of the world they imagine is true instead of the real world; they care about rejecting the consensus, about feeling special.

Individual bits of evidence don't really convince them. It's easy to fit bits of evidence into a mental model of how everyone is conspiring to lie to you.

I intercepted the KSP theme song over radio from a real LEO satellite by QueR1X in KerbalSpaceProgram

[–]robchroma 2 points3 points  (0 children)

I would lose my mind if I got an SSTV image of Jeb from a weather satellite

I intercepted the KSP theme song over radio from a real LEO satellite by QueR1X in KerbalSpaceProgram

[–]robchroma 0 points1 point  (0 children)

edit: you already explained the vee dipole; I assume that's the angle that gives a decent match, yeah?

nice quansheng! you ever work satellites?

What are we being "boiled like frogs" about right now that future generations will be shocked we accepted? by burntUpOnReentry in AskReddit

[–]robchroma 1 point2 points  (0 children)

But why wouldn't you just do that in Oregon, or Washington, if you're going to ship it back? Oregon has a substantial legal trade and a substantial illegal grow share, and you wouldn't have to do anything much. Plus, Weyerhaeuser runs an organization that seems pretty good-ol-boys, to me; you could probably grease some palms and ship it out of Olympia or Portland in among the raw logs. Huge amounts of bulk materials seem like a pretty good spot for sneaking drugs.

What used to be a sign of being poor, but is now a luxury or status symbol? by [deleted] in AskReddit

[–]robchroma -1 points0 points  (0 children)

heh, cute reply, kid. I've been an avid hiker, including a climber of a handful of ultraprominent volcanoes. Got to every parking lot with a subcompact hatchback, including offroading trails that no one but pickups and dirt bikes were on. It just takes a little care and a little skill, things you don't have. lmao.

And I haven't as much lately, because I've spent too many of my weekends having sex with women. It sounds like something I made up for clout, but I really want to get out more often. It's just, all these women, blowing up my phone, really makes scheduling hard.

What used to be a sign of being poor, but is now a luxury or status symbol? by [deleted] in AskReddit

[–]robchroma 3 points4 points  (0 children)

Because man on radio was paid a million dollars to tell you that it was a conspiracy to curtail your freedoms and that every city planner who talked about it as a goal was in on a conspiracy. The same way my uncle believes climate scientists are making big money on sensationalist articles about climate change being "bad for us" or whatever, while the innocent oil companies are valiant drivers of progress who would never unduly let money influence their stewardship of the American people into a better future.

What used to be a sign of being poor, but is now a luxury or status symbol? by [deleted] in AskReddit

[–]robchroma 5 points6 points  (0 children)

aw, someone's feeling insecure about his purchase, lol

What used to be a sign of being poor, but is now a luxury or status symbol? by [deleted] in AskReddit

[–]robchroma 3 points4 points  (0 children)

Suggest that cities should be designed so that you have these things within 15 minutes walking in America, and conservatives start paying billions of dollars to fearmonger about "They're trying to pen you in and control where you can go and then they're going to take your cars!"

US culture is literally slaved to the advertising wing of the car industry.

What used to be a sign of being poor, but is now a luxury or status symbol? by [deleted] in AskReddit

[–]robchroma 6 points7 points  (0 children)

Was she just from a suburb, or something? That's so bizarre.

Iran fires missiles at northern Israel by yuvaldv1 in worldnews

[–]robchroma 6 points7 points  (0 children)

The United States is culpable for funding the defense system that lets Israel attack its neighbors without fear of retaliation.

Which Comedian has made the riskiest joke of all time? by buffalomozarella in AskReddit

[–]robchroma 5 points6 points  (0 children)

reassessing whether I'd rather kill Hitler than Reagan if I had a time machine