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devnulloverflow

223 karma · joined July 29, 2019

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devnulloverflow··on 80x25
don’t really have resolution per se

A CRT doesn't have to have resolution in the sense of pixels per inch (although many of them do). However "resolution" is a more general limit on how far away two distinct points can be.

A discrete grid of pixels imposes one kind of limit. But another kind of limit is that two slightly fuzzy dots will become indistinguishable if they blur into one another sufficiently.

devnulloverflow··on US Constitution – A Git repo with history of edits
As far as I know, "bill of rights" is in fact the informal name of the first 10 amendments -- which were proposed and passed as part of the political compromise that got the constitution accepted at all.

The remaining amendments are, well, just amendments. They don't necessarily specify rights, and are generally not considered part of the bill of rights.

devnulloverflow··on How Can a Star Be Older Than the Universe?
> Doesn’t that imply that we are getting “bigger”?

Yes, if by "we" you means "large scale cosmological structures".

But galaxies stay roughly constant size because gravity holds them together. Smaller things are also held together by various forces.

devnulloverflow··on How Can a Star Be Older Than the Universe?
The visible galaxies.

That is we see red-shifts when we observe distant objects. And comparing that to other distance estimates, we see that far away things are more red-shifted. As if they are moving away from us.

When we build cosmological models to explain this, we could choose reference coordinates for time and space in different ways. But if we choose to define time and distance in the usual way then we get a picture in which the distances between all galaxies is increasing with time.

devnulloverflow··on How Can a Star Be Older Than the Universe?
Your intuition that there is an limited observable distance because is correct. But because of the expansion, that limit is bigger than "speed_of_light * age of universe" .

I don't know enough General Relativity to give a solid explanation. But here is a rough over-simplification: Imagine you've spent the last 5 seconds blowing up a balloon, but there is an ant walking on that balloon, starting from a marked spot.

In the 1st second, the ant moved 10mm. But in the next four seconds you blew up the balloon, so that 10mm of rubber is now 70mm long. The total distance from the ant's starting mark to her end-point can now be well over than 70mm, even though she only walks at less than 10mm/second.

As the ant, so the photon.

devnulloverflow··on Stupid Alexa Trick: Speaking French with a Horrible American Accent
It would not be too hard to add a field for an IPA version of the name. But populating the dataset would be a huge chicken-and-egg problem.
devnulloverflow··on Stupid Alexa Trick: Speaking French with a Horrible American Accent
Even then, wouldn't a delta just be a "d"? Or do Greeks pronounce the "th" in "the"?
devnulloverflow··on Stupid Alexa Trick: Speaking French with a Horrible American Accent
> [Brussels] is French speaking, although it's in the middle of a Flemish province.

This is what I keep reading, but when I visited there I observed both languages in apparently equal measure. Of course my observations were superficial -- I was a tourist who spoke neither language.

But I even if I am right, that just underscores your point. The fact that a request comes from Brussels, gives you very little clue what language the user wants. Especially if that request comes from a some foreigner working for the EU.

devnulloverflow··on Stupid Alexa Trick: Speaking French with a Horrible American Accent
I was going to say that, since Rio Tinto is a mining company, that it probably originates in Brazil. But actually it is an Anglo-Australian company named after a mine in Spain. (Which, according to Wikipedia, started operations 5000 years ago).
devnulloverflow··on PG&E could shut off power across Bay Area on Wednesday and Thursday
I can't think of a single use case where Java is more useful than C++. Unless it is the "we've hired some Java programmers, now what do we do with them" use case.
devnulloverflow··on The global gag on free speech is tightening
> Does anyone understand how such a seemingly unconstitutional law could get passed ?

Things get passed because politicians vote for them. They might or might not listen to legal advice about their constitutionality before voting.

It's possible there is something we don't know that makes the rule constitutional. Other possibilities are:

1. The councilors who voted for it don't care, their strategy is to try to get away with anything and let the courts uphold the constitution.

2. The councilors actively want the courts to strike it down to generate a talking point at the next election.

There are plenty of voters who will reward both strategies, and they are over-represented among the politically active people.

devnulloverflow··on Where Is the Sun Located in the Milky Way?
So yes, when I lived in the Europe one of the joys of coming back to Oz for holidays was that you can actually see stars. Even inside a big city, the nights tend to be clearer than in Europe and the light "pollution" more limited.

That said, I've never seen the Milky Way.

I probably could if I went out somewhere far from the city, but I can't remember ever actually seeing it, even when doing star-gazing at school camp.

devnulloverflow··on Fixing Getrandom()
Which is to say, /var/ is writable when they do it.

This business of /var/ not being writable early enough is probably to do with the wonderful complexities of modern Linux, and is just not a problem that OpenBSD has.

devnulloverflow··on Nearly half of white Harvard students are athletes/children of alumni/donors
With regards to public policy: there's not much of a problem (except to the extend that public policy props up private schools).

But should it not cause us to re-evaluate how much we respect the university and it's degrees?

devnulloverflow··on Nearly half of white Harvard students are athletes/children of alumni/donors
It's not about weeding anyone out. Or at least not trying to.

An Engineering degree that really teaches stuff will be difficult. And some students will find it is not for them and leave. Preferably early before they have invested too much in it.

devnulloverflow··on Why Thomas Cook Collapsed
> (Yes, that way lies the potential for moral hazard)

Which is to say that it is in fact costing the UK very much less than a bailout.

devnulloverflow··on The U.S. economy is growing and using less and less stuff to do so
Globally, the energy used per unit of GDP has dropped, although the energy used in total has increased.

https://yearbook.enerdata.net/total-energy/world-energy-inte...

devnulloverflow··on Switzerland in the age of automatic exchange of banking information
> ... but it floated as high as 1.26 in 2013.

Just before they abandoned the peg as too hard to maintian.

devnulloverflow··on Square wants to be a bank but not be taxed like one
Financial services (as opposed to actual investing) is a form of information technology, albeit one that is older than electronic IT. It is probably no coincidence that they really took with the arrival of paper and decimal notation.

But then as now, the actual IT rapidly becomes the boring part of the operation and the real business becomes, well the business. That of finding clients and tailoring your services to them.

devnulloverflow··on Australia’s 4G network is faster than 5G: study
But the 4G, 5G monikers don't correlate either.
devnulloverflow··on The exponential function is a miracle
It's one of the definitions, and perhaps not the most fundamental.

In the complex plane (and all real analytic functions can be analytically extended into the complex plane), you can define the equivalent property as saying a (first!) derivative has the some value no matter how you chose to take the limit.

So just by virtue of having a well defined first derivative in a particular region you get all the Maclaurin series magic.

devnulloverflow··on Socrates Was Against Writing (2011)
Yes.

And there's also The Clouds by Aristophanes (https://en.wikipedia.org/wiki/The_Clouds). And in my sometimes I suspect it might be the most accurate portrayal. But we'll never know.

devnulloverflow··on Socrates Was Against Writing (2011)
> He may be simply giving his own opinion and attributing it to Socrates, who had a higher reputation.

We'll never really know how much the human Socrates matches Plato's literary character. But the reason for that is that Socrates never did write down his teachings, whereas Plato did.

It would be a funny old world in which Socrates had no objection to writing, but never wrote anything, but Plato did have a an objection to writing, but wrote lots of stuff, including lies about Socrates objecting to writing.

But then again, this is a funny old world.

devnulloverflow··on Why Ada Is the Language You Want to Be Programming Your Systems With
> The two languages, ecosystems, and communities seem to have largely non-overlapping objectives despite having overlapping technical capabilities.

I keep thinking servers should be written a bit more like embedded thingies. (Though I suspect the actual trend is in the other direction).

Both kinds of software deeply interested an asynchrony and concurrency (though not necessarily parallelism). And both also tend to talk over networks to other gadgets as part of a complex system. And since my job often revolves around putting out fires when severs OOM, I'd also like to see a lot less malloc().

It would be nice if software could place hard upper limits on how many resources (including RAM) it takes to serve a request and then reject requests early. With real-world languages and frameworks, we can only do very primitive approximations to this. But a framework written from the bottom-up with a malloc-is-evil mentality () might be able to do it.

devnulloverflow··on Why Ada Is the Language You Want to Be Programming Your Systems With
> Just the mojo required to print an integer (having to instantiate a generic) was considered complicated

That sounds complicated to me, in 2019 with 25 years of C++ experience. (And of course C++ error message sprouting mysterious stdlib templates also seems complicated to me).

devnulloverflow··on How to do a code review
It depends on what company you are.

Some who administers some SAP thing for a huge supermarket chain tells me they do all of their upgrades on weekends because their users aren't at work.

Makes sense for them, but it would be a crazy thing to do the consumer-focused interweb company that I work for.

devnulloverflow··on Human speech may have a universal transmission rate: 39 bits per second
Well I'm sure the ability requires training, but I wonder if it is specific to screen readers.

Consider what you quote: > we’re likely limited by how quickly we can gather our thoughts

Now the amount of relevant info on a screen is typically small enough that a sighted person can zero in on it at a glance and perhaps just click a button without thinking.

I.e. the amount of info that deserves "gathering our thoughts" is typically very small. So if that is the bottle-neck, your colleague can keep cranking up the audio speed until low-level processing audio becomes the bottle-neck, which is a regime that sighted people never deal with even, not even the nerds who speed up their Joe Rogan podcasts.

devnulloverflow··on The Eternal Mainframe (2013)
> Soon we will reinvent the BBS, shareware, etc.

What I want back are the duck-strangling noises that the dial-up modem makes when connecting.

devnulloverflow··on What Happened in the UK Blackouts?
The answer to the genre of questions is that you always want fewer small problems, and more day-to-day efficiency...

... until the big disaster actually happens at which time at which point it's simply criminal that such things were allowed to happen.

devnulloverflow··on Oracle directors give blessing to shareholder lawsuit against Larry Ellison
True at one level. And some hypothetical country could actually have that rule as the law -- "investor beware" might work better than our real system.

But in the system as it is, Oracle shareholders bought shares on the understanding that Larry had some fiduciary duty to the owners of the company.

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