pglpm

joined 2 years ago
MODERATOR OF
[–] pglpm@lemmy.ca 5 points 7 months ago

Cheers! Got a bit clearer now.

[–] pglpm@lemmy.ca 20 points 7 months ago (2 children)

Appreciated if someone can explain what is the problem and its context in simple terms 🙏

I understand the GNU "framework" is built on free, open source software. So I don't understand how one can "discover" that there were pieces of non-free software there... They were put there by mistake?

[–] pglpm@lemmy.ca 18 points 7 months ago (2 children)

The current security philosophy almost seems to be: "In order to make it secure, make it difficult to use". This is why I propose to go a step further: "In order to make it secure, just don't make it". The safest account is the one that doesn't exist or that can't be accessed by anyone, including its owner.

[–] pglpm@lemmy.ca 4 points 7 months ago* (last edited 7 months ago)

Just wanted to applaud the fact that you've come here asking people, rather than asking some large language model.

[–] pglpm@lemmy.ca 2 points 7 months ago (1 children)

We aren't supposed to accept that. We can simply not use their software. And as users that's the only power we have on devs. But it's a power that only works on devs who are interested in having many users.

[–] pglpm@lemmy.ca 9 points 7 months ago* (last edited 7 months ago)

Nobel prize in computer science. Looks like the Nobel Prize committee has forgotten what Physics is.

[–] pglpm@lemmy.ca 4 points 7 months ago

Well done! 💪🚀

This reminds me: what kind of Youtube replacement or quasi-replacement in the Fediverse? I've heard that Peertube may be difficult to maintain long term, which makes sense...

[–] pglpm@lemmy.ca 11 points 7 months ago* (last edited 7 months ago)

This is a fascinating phenomenon – but fully within current theory. And there's no "inversion of the arrow of time", despite what the sensationalistic, misleading title seems to imply. From the recent paper (my emphasis):

Our results, over a range of pulse durations and optical depths, are consistent with the recent theoretical prediction that the mean atomic excitation time caused by a transmitted photon (as measured via the time integral of the observed phase shift) equals the group delay experienced by the light.

The theoretical explanation is given in this paper:

We examine this problem using the weak-value formalism and show that the time a transmitted photon spends as an atomic excitation is equal to the group delay, which can take on positive or negative values.

It is essentially related to the difference between phase and group velocity of waves.

One more example of how nature – as we currently understand it – offers amazing, fascinating, unexpected phenomena. It doesn't need misleading sensationalism.

[–] pglpm@lemmy.ca 2 points 8 months ago

Fully agree.

It's worth posting the blog post you linked.

[–] pglpm@lemmy.ca 2 points 8 months ago

Personally I disagree on value of sex/nude scenes – but it's a subjective matter of course. Your final argument is absolutely fair and logical, and very general too. Extremely well put – I subscribe 110% to it!

 

cross-posted from: https://lemmy.ca/post/1916423

This insightful blog post seems to refer to this article. I hope the article is an isolated case. Although it's undeniable that scientific illiteracy is spreading.

 

This insightful blog post seems to refer to this article. I hope the article is an isolated case. Although it's undeniable that scientific illiteracy is spreading.

1
submitted 2 years ago* (last edited 2 years ago) by pglpm@lemmy.ca to c/busterkeaton@lemmy.ca
 

There's an old youtube channel by "Avamogal" (apparently "a mom to 7 boys. 10 grandkids 8 boys, 2 girls") which is full of great collages of Buster clips, with interesting music backgrounds. Recommended.

Sadly it seems the channel hasn't been active for 6 years or so...

 

I have read the FAQ of KDE Neon: it is well made and answers ground questions like "Is it a distro?" or "Can I turn Kubuntu into KDE Neon?"

...And yet I'm confused, because I'm just a newbie in the Linux world. For instance, when they say "on top of a stable base" I don't know what's meant as a "base".

I think I understand that it isn't a distro, but it fascinates me that it's meant to be installed from an ISO or similar, just like a distro.

I wonder if any of you can explain:

  • What is it, in different words?
  • Why is it "implemented" as it is?
  • Are there any other "quasi-distros" like KDE Neon out there?
  • Do you use it? how has your experience with it been?

Cheers!

 

If I want to link to a community X on a Lemmy instance Y.zzz, I know I should use the link /c/X@Y.zzz, which will redirect to the copy of the instance on the server where the user has the account.

What is the analogous way to link to a post? For example this post has address lemmy.ca/post/1866360 but what link should I give to users on another instance, so that they can see the post in their instance?

 

cross-posted from: https://lemmy.ca/post/1721793

The article introduces a dynamic cosmological constant in the current ΛCDM cosmological model to account for some data from the James Webb telescope. The new model would have the age of the universe at ~27 billion years.

This is interesting. Unfortunately some popular science magazines are already presenting it as a fact...

 

cross-posted from: https://lemmy.ca/post/1721793

The article introduces a dynamic cosmological constant in the current ΛCDM cosmological model to account for some data from the James Webb telescope. The new model would have the age of the universe at ~27 billion years.

This is interesting. Unfortunately some popular science magazines are already presenting it as a fact...

 

The article introduces a dynamic cosmological constant in the current ΛCDM cosmological model to account for some data from the James Webb telescope. The new model would have the age of the universe at ~27 billion years.

This is interesting. Unfortunately some popular science magazines are already presenting it as a fact...

https://doi.org/10.1093/mnras/stad2032

 

Some large datasets are pushing memory and some functions I'm writing to the limit. I wanted to ask some questions about subsetting, of matrices and arrays in particular:

  1. Does defining a variable as a subset of another lead to copy? For instance
x <- matrix(rnorm(20*30), nrow=20, ncol=30)
y <- x[, 1:10]

Some exploration with object_size from pryr seems to indicate that a copy is made when y is created, but I'd like to be sure.

  1. If I enter a subset of a matrix/array as argument to a function, does it get copied before the function is started? For instance in
x <- matrix(rnorm(20*30), nrow=20, ncol=30)
y <- dnorm(0, mean=x[,1:10], sd=1)

I wonder if the data in x[,1:10] are copied and then given as input to dnorm.

I've heard that data.table allows one to work with subsets without copies being made (unless necessary), but it seems that one is constrained to two dimensions only – no arrays – that way.

Cheers!

 

There are two kinds of colours that appear in each torrent entry in Nyaa's listings:

  • One for the rectangle in the "Category" column. I see many different colours there: purple, red, dark and light grey, green, orange, dark and light yellow...

  • One for the whole row. Here I've only seen three different colours so far: white, green, red.

Do these colours, especially the second, mean anything?

Nyaa's Help page mentions the meaning of four "torrent colours": green, red, orange, grey. But they don't say where these colours appear. If they mean the row colour, then I've never seen an orange or grey one. So I'm very confused. Maybe the Help page is outdated?

OK, not a life-or-death matter, but I've been curious about this for a long time...

 

Something that struck me about recent "large language models" is how their answers resemble those of students who work (on purpose or unawares) by memorization. I mean students who learn that specific patterns, appearing in questions, require particular answers. Such students can be extremely skilled at this. But they don't really understand why those answers are meaningful or correct. Their lack of understanding appears clearly upon closer examination and some digging. Exactly as it happens with large-language-model algorithms.

(This is one reason why I personally don't consider these algorithms to have any genuine "knowledge"; not yet at least. But that's not my point here.)

Now those algorithms manage to answer almost correctly many questions from exams; I speak for maths and sciences in my country (Norway) at the bachelor level; but I think the same can be said for other subjects and in most countries (correct me if I'm wrong). In my opinion this shows that our current education and graduation system is focusing on the wrong thing: not knowledge, but parroting. As Gibson asked in 1964:

Do we, in our schools and colleges, foster the spirit of inquiry, of skepticism, of adventurous thinking, of acquiring experience and reflecting on it? Or do we place a premium on docility, giving major recognition to the ability of the student to return verbatim in examinations that which he has been fed?

I think this is a huge problem that has been with us, and we have been aware of, for a long time. But the current AI development emphasizes it very strongly. And it urges us to ask (again) some questions. This is what I'd like to hear your opinions and points of view about:

  • Some institutions where I live are planning to use these AI algorithms to (help) generate or correct exams. I think this strategy completely misses the point: shouldn't we prepare exams that these AI cannot answer, which would mean they rely on understanding rather than language patterns?

  • If we keep teaching and grading students based on memorization, won't they become unemployed in the coming years? Their "knowledge" can be obtained more cheaply and quickly from AIs.

  • Assuming you agree at least partially on the theses above, then which education levels seem to be most affected?

  • Doesn't the current packing and compression of lots of subjects into a very short time, at bachelor levels, make the situation even worse?

These are personal (though starkly held) views of course. I respect others and would be happy to hear arguments and counter-arguments!

4
But that's Macross! (static.wikia.nocookie.net)
submitted 2 years ago* (last edited 2 years ago) by pglpm@lemmy.ca to c/sdfpubnix@lemmy.sdf.org
 

I joined SDF very recently, and today I took a closer look at its logo. ...That's Macross! Exciting childhood memories come to mind, with engaging background music. Exhilarating!

Is there somewhere I can read about SDF's logo? I checked the FAQ, maybe not thoroughly enough, but didn't find anything.

While refreshing my memories about Macross I read that it was named Super Dimension Fortress – now I see the connection :)

To whoever designed that logo: you're on my "inspiring people" list now. Genius.

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