PM_ME_VINTAGE_30S

PM_ME_VINTAGE_30S , 1 day ago

Maybe TMI but hygiene. When I'm too sad to clean up then obviously I don't do it, but when I'm doing really good I get so caught up in my work that I forget to clean up.

PM_ME_VINTAGE_30S , 3 days ago

Stop funding a genocide

Abolish the police

Abolish prisons

Abolish the military

Reverse course on climate change

Open up the borders

Drop all student loans, pay back previous loans with interest

Free college

Drop the TikTok ban and replace it with a data privacy law

Cancel all defense contracts

Do any one of these for real and I'll vote for him. But I have my doubts...

PM_ME_VINTAGE_30S , 3 days ago

• cops

PM_ME_VINTAGE_30S , 4 days ago

Gore video, do not open

PM_ME_VINTAGE_30S , 17 days ago

Would be great for me and others who have trouble with body language. I could deepfake a version of myself with neurotypical body language and offload the effort of "acting normal" to the AI for interviews and video calls. Genuinely I'm super pumped for this.

PM_ME_VINTAGE_30S , 1 month ago

Nope. I have texture issues with denim.

PM_ME_VINTAGE_30S , 1 month ago

Catholics are Christians, but Christians are not necessarily Catholic. For example, Orthodox Christians are not Catholic. Being Catholic requires, at the bare minimum, agreement with the Holy See and implicitly the dogma he endorses. Even this "minor" difference can be used to find non-Catholic Christians.

Precisely, Catholic ⊊ Christian.

The reason why this is the case has to do with the history of Christianity, specifically the various schisms throughout the ages as the Christian faith evolved. That's an incredibly complicated topic which I'm not qualified to discuss.

PM_ME_VINTAGE_30S , 1 month ago

One kinda emphasizes, if not "otherizes" the other... usually in a not good way...

Yeah. People have been killed over being Catholic in a non-Catholic Christian society and people have also been killed over being a non-Catholic Christian in a Catholic society.

But that doesn't mean that we can't or shouldn't differentiate at all between the dogmas of Catholics and the wider practice of Christianity.

(orientalize or occidentalize)

I mean there are lots of non-Catholic Churches with European origins, for example Lutheranism and Anglicanism. So I think it's a bit more complicated than "otherizing" with respect to that specific dichotomy.

PM_ME_VINTAGE_30S , 1 month ago

@Mistral Prove the two Fundamental Theorems of Calculus.

PM_ME_VINTAGE_30S , 1 month ago

@Mistral Please continue.

PM_ME_VINTAGE_30S , 1 month ago

@Mistral Please continue.

PM_ME_VINTAGE_30S , 1 month ago

@Mistral You said "By the properties of limits, we can interchange the order of the limits", but you can't in general interchange the order of limits except under strict circumstances.

PM_ME_VINTAGE_30S , 1 month ago

Why I do this to myself lmao

PM_ME_VINTAGE_30S , 1 month ago

@Mistral Please continue.

PM_ME_VINTAGE_30S , 1 month ago

@Mistral I think the proof of the second part was fine; it was the first part where the interchange of limits was used and was therefore erroneous.

PM_ME_VINTAGE_30S , 1 month ago

@Mistral In the previous output, I think that you mean "max(norm(P))" where you say max(P), right? The condition "max(P) -> 0" just smooshes the partitions into the origin.

PM_ME_VINTAGE_30S , 1 month ago

For anyone else reading this [1], a partition of an interval [a,b] is a finite set of points satisfying the condition a = x_0 ≤ x_1 ≤ ... ≤ x_n-1 ≤ x_n = b. So the max(P) = b, so the condition max(P) -> 0 just means b -> 0, which is wrong.

[1] But like, y tho?

PM_ME_VINTAGE_30S , 1 month ago

@Mistral Okay. Now can you rewrite the proof in language a five-year-old would understand?

PM_ME_VINTAGE_30S , 1 month ago

It's screwed up a couple times. For example, the bit about "by the properties of limits you can interchange the limits" is hilariously untrue.

PM_ME_VINTAGE_30S , 1 month ago

Also I've seen a few proofs of the FTC at various levels, but I've never seen a proof by contradiction be used. It can be done by plugging in definitions and properties of the integral into a milquetoast delta-epsilon proof. It's less than a page for both theorems in "baby Rudin." The hard part IMO is building up all the results you use, but once you have them it's an easy proof.

PM_ME_VINTAGE_30S , 1 month ago

@Mistral That's great! Can you rewrite the proof so a dog can understand it?

PM_ME_VINTAGE_30S , 1 month ago

Welp my brain is sufficiently melted. 10/10.

In all seriousness, this is really cool!

PM_ME_VINTAGE_30S , 1 month ago

I think we don't block anyone, including Threads. If you want, you can block them for yourself in your settings.

PM_ME_VINTAGE_30S , 1 month ago

I don't think they need us to be federated with them to use your information. Like they could probably just scrape it if they decide they're interested in it.

PM_ME_VINTAGE_30S , 1 month ago

Yeah, I get that approach. IMO for 99% of people joining an instance that blocks Threads is probably a good idea. However, I'm not one of them, and I think most people on this specific instance aren't either, hence why we're here instead of somewhere else. I think that for my "threat model", the benefits of having access to the full Threadiverse outweigh the possible downsides.

PM_ME_VINTAGE_30S , 1 month ago

Yes. Meta is a shit company, and I'm not a fan of corporations in general so they're doubly shit. Frankly, I hate them and everything they're about. My point still stands. Particularly, for my threat model, I want to be able to monitor the situation and interact with people who feel "forced" to be on Threads.

PM_ME_VINTAGE_30S , 1 month ago (edited 1 month ago)

Not really.

A lot of good people are on enshittified social media (Threads in particular) because they feel pressured by their social network (their actual set of human contacts) to "go where the people are". Some of them are there because they don't know that the free Threadiverse exists, particularly Lemmy (I've never met anyone IRL who knows what Lemmy is).

It's not a silver bullet, and obviously I'm just one guy making uncoordinated comments and posts, but I think that there is some benefit to interacting with Threads users if and only if you personally can take on the extra load of doing so.

If we wanted to make a "coordinated" campaign against Threads, IMO the strategy would be to (1) be nice to people from Threads who decide to come to our communities, so long as they behave, and (2) post openly coordinated anti-Meta messaging distributed throughout the Fediverse in places where Meta can't just take it down, of course placing this messaging in appropriate communities. I.e., make the free world a challenging place to be for a company that doesn't respect freedom. But I'm not experienced/sociable enough to orchestrate item (2).

PM_ME_VINTAGE_30S , 1 month ago

So wtf do you even like?

PM_ME_VINTAGE_30S , 1 month ago

Yeah my position is really to recommend any FOSS OS in the large over proprietary ones. However, since my experience is primarily with Linux distributions, and I do think that Linux makes sense for a lot of use cases, I usually start by talking about "Linux" first.

But, from my experience, if a "solution" to a problem "forces" the user to make a choice, then they'll stick with what "currently works" over having to make a choice. So when I talk to people about Linux IRL, I typically direct them to Linux Mint directly, even though other distros exist and it actually doesn't fit my use cases. Once they're comfortable in the Linux ecosystem, they can switch to a different distro or OS family if they feel the need to do so.

PM_ME_VINTAGE_30S , 1 month ago

Typically Linux. While my systems (Debian) absolutely are GNU/Linux, you can now find Linux distros without GNU tools.

PM_ME_VINTAGE_30S , 1 month ago

I'm a full-time Linux user now.

PM_ME_VINTAGE_30S , 1 month ago

They aren't "stranded", they're addicted to or rather emotionally reliant on these platforms. It is a choice, you can pull the plug.

From the article:

If you're a Gen Z kid on Tiktok, you experience the same enshittification as your Millennial elders. But you also experience an additional cost to staying: as late-arriving adult authority figures become more fluent in the platform, they are more able to observe your use of it, and punish you for conduct that you used to get away with.

And if you're a Millennial who isn't leaving Tiktok, it's not just that you experience the same enshittification as those departing Gen Z kids – you also face higher switching costs if you go. The older you get, the more complex your social connections grow. A Gen Z kid in middle school doesn't have to worry about losing touch with their high-school buddies if they switch platforms (they haven't gone to high school yet – and they see their middle school friends in person all the time, giving them a side-channel to share information about who's leaving Tiktok and where they're headed to next). Middle-schoolers don't have to worry about coordinating little league car-pools or losing access to a rare disease support group.

In other words: younger people leave old platforms earlier because they have more to gain by leaving; and older people leave old platforms later because they have more to lose by leaving.

And as a young millennial/old gen Z guy, I can switch networks with ease because I just don't personally have any network to lose! I didn't have any friends on Reddit when I left! And when I left Facebook, I only ever kept in close contact with two people.

Considering the history of the world and the fact that our species is a social one, I don't think that people clinging to their social network is worth classifying to be an addictive or emotionally reliant behavior. I can tell you from personal experience: not having a social network is a fast-track to a difficult life.

There's a world out there.

Right, so people leaving a social network would have to reintegrate into some in-person social network. That is seen as a cost to leave their current network.

Literally unless you want to just be alone all your life (which is fine and frankly I sympathize, hence why I'm not making friends on enshittified social networks), you need to go where the people are, even if it sucks, even and especially to do real things in the real world.

PM_ME_VINTAGE_30S , 1 month ago

Depends on the image.

PM_ME_VINTAGE_30S , 2 months ago

I mean we have RISC-V and Linux (and other FOSS OS's). IMO the big challenge is to get designers to actually choose these options over the proprietary options that they already know, and then to demonstrate to consumers that free systems can work for them.

Also, obligatory "America bad" segment:

*Insert various fellatory quotes pushing American exceptionalism with respect to creating a free and open-source computer

By its very design, the United States stands against freedom and equality. If they ever claim to want to bring those things to software (or any other field of endeavor), it should be treated as an obvious lie. For this reason, the American government and the capitalists they serve are the last people on Earth I want involved in the design of my future computer, free or otherwise.

PM_ME_VINTAGE_30S , 2 months ago (edited 2 months ago)

There will be people cheating the hell out of this, because let's face it. What people need is not a free computer. They need food and money.

While I'm not personally at all against giving out free computers ... that's not really what is meant here.

I think we're talking about free as in "speech", not necessarily "beer". In the case of hardware, this would mean that the design is "open" to be viewed, copied, or derived from. For example, if you develop a processor using the ARM architecture, you have to pay ARM royalties.

Stable income is a sure way road to decrease in crinimal activity and a more safe society. THEN you can consider providing free stuff, when there's no reason to abuse it.

I mean as long as the capitalists are the ones footing the bill I got no problem scamming them out of free computers or whatever. They scammed you and everyone you know out of your environment, your freedom, your privacy, your future, so fuck'em. Whatever you take from them is in better hands in yours than theirs.

More generally, I don't agree that we need to wait for stable incomes to do other things.

PM_ME_VINTAGE_30S , 1 month ago

Awesome!

PM_ME_VINTAGE_30S , 2 months ago

Drums. Don't have money or practice space for even an electric kit. And also I'm in absolutely terrible shape.

PM_ME_VINTAGE_30S , 2 months ago

Engineering student. I typically use whatever number of digits the calculator gives me in calculator computations, but that's unnecessary. IMO for a design, an engineer should use at least as many digits of pi as needed to not lose any significance due to truncating pi specifically. Practically, this means: keep as many significant digits as your best measurement. In my experience, measurements have usually been good for 3 significant digits.

For back-of-the-envelope or order-of-magnitude calculations where I only need to get in the ballpark of correctness, I'll use 3 (i.e., one significant digit). For example, if I order a pizza with a diameter of 12 inches, A ≈ 36 * 3 in^2 = 108 in^2 is a fine ballpark approximation that I can do in my head to the real area A = 36π in^2 ≈ 113.097... in^2 that my calculator gives me.

PM_ME_VINTAGE_30S , 2 months ago

Gotten on antidepressants immediately after high school. I would have had my shit completely together by the time I graduated from community college and either succeeded in my original field (music recording) or gone to engineering school and finished before the pandemic.

PM_ME_VINTAGE_30S , 2 months ago

Tired, worried, irritated.

I have an exam literally next Sunday night and another one the following day. Professor doesn't fucking know what's going to be on the exam (so there's an hour of my life I'm never getting back) which is literally the only fucking good a professor can do other than grade the homework (which she doesn't) or answer questions about course expectations (she's a terrible listener and doesn't give straightforward answers) for someone with my particular set of neuroses like me. I.e., test topics and what they're expecting us to put on the piece of paper are the only things I can't fucking find elsewhere, usually in far better quality than what I'm paying thousands of fucking dollars to sit through.

I also got a bunch of work due this week from another professor that there was absolutely no way to work on before last Friday.

This week was supposed to be my fucking spring break, but people my age don't fucking get a moment of rest I guess. I've had to explain to my parents like 69 times that even though this week is de jure spring break, I'm going to be a lot more busy this week than usual.

PM_ME_VINTAGE_30S , 2 months ago

I pretty distinctly remember being introduced to square roots at the same or nearly the same time as complex numbers. Obviously we didn't do the whole Complex Numbers Extended Cinematic Universe, but I think my class did learn to solve quadratics with complex roots in middle school.

I mean I did go to Catholic middle school, but I don't think the math education was that weird.

PM_ME_VINTAGE_30S , 2 months ago

You can literally take a class on Complex Analysis. Turns out that those "small" modifications have huge ramifications. They add a ton of extra structure to the real numbers which can be exploited, particularly if your problem can be expressed in terms of sines and cosines, or if your problem lives on a plane.

For example, complex differentiability is much more stringent than real differentiability, to the point that the existence of one complex derivative implies the existence of all of them! Furthermore, you have to be really careful extending the classic functions to the complex numbers. Typically, you either end up with a multivalued function, or you have to pick a specific branch that is single-valued.

If you want to learn more, Theodore Gamelin's Complex Analysis book is a good place to start. But to read it, you'd really benefit from a background in vector calculus. For a more "practical" but still detailed account of complex variables, check out Complex Variables and the Laplace Transform for Engineers by Wilbur LePage, which just assumes basic calculus.

Is there much beyond i^2 = -1, z = a + bi, and e^iθ = cosθ + isinθ

What does electric current "i" have to do with the glorious imaginary unit j ?

This post was brought to you by Electrical Engineering Gang.

!In electrical engineering, we use the letter j instead of i because historically, i is reserved for electrical current. Gamelin uses i in his book which is wrongthink, but LePage uses j. !<

PM_ME_VINTAGE_30S , 2 months ago (edited 2 months ago)

EDIT: I rolled a critical fail in reading comprehension and I thought the other track was N per integer instead of 1 per real number in the previous version of this comment.

The people in the real number track are already dead by the time the trolley arrives due to the forces involved in cramming them so tightly together. I.e. they are basically just a gore pile the moment after the people are somehow arranged like that.

I pick the real number track so that no one new has to die.

PM_ME_VINTAGE_30S , 2 months ago

So I was going to write a comment about how you actually can adjust weight and mass independently based on W = mg if you can control gravity, and that comment relied on the assumption that kg measures mass and lb measures weight...

Except the latter is not true! In US customary and other systems that use the avoirdupois pound, 1 lbm := 0.45359237 kg exactly. However, there is also a pound-force, which is lbf := (1 lb) × (gravitational acceleration in ft/s^2 ). This gives rise to the slug, yet another unit of mass defined as slug := (1 lbf) ÷ (1 ft/s^2 ) = 32.17404 lbm. I actually used this unit in my differential equations class because my professor was really old-school.

The source of the confusion is that the "pound" as a unit of measurement (really one of several units) predates the distinction between mass and weight.

Moral of the story: if handed US customary units, just convert to metric (SI). And I guess I have to write lbf or lbm now whenever I'm forced to use US customary.

PM_ME_VINTAGE_30S , 3 months ago

If I remember correctly, the green in this sub is for social ecology, Murray Bookchin's theory. AnPrims really don't like Bookchin, so they probably wouldn't enjoy this community's perspective.

Although tbh I haven't seen many AnPrims on Lemmy at all.

PM_ME_VINTAGE_30S , 3 months ago (edited 3 months ago)

I'm still here! I'm more interested in learning from your perspectives than dumping mine.

Edit: so I failed a Perception check and read this as being about this community. I am very much not on Reddit anymore.

If I had to guess, the Redditors "lost" probably diffused into several Lemmy communities, Raddle, several Mastodon instances, several Discord servers, and several places unknown to us. Some of us probably took the lack of activity in each individual forum as a lack of interest. We fragmented. I know you're in a bunch of anarchist communities, and I'm subscribed to a few, but there's probably some people we're missing.

PM_ME_VINTAGE_30S , 3 months ago

Textbooks compile information about a subject into one cohesive whole for study. They're super useful, even though they are too expensive typically. Library Genesis is great for obtaining textbooks you can't afford to purchase.