I suppose one could argue that if you are ignoring things like gamma and couour space and falling back on defaults, you are not showing the image correctly. My impression is that PNG takes a more relaxed approach, and considers anything that is in the right ballpark to be correct. For example, before hi-DPI screens ("retina display" and others) most image viewers would just map one image pixel to one display pixel, completely ignoring any "physical size" values, and this was generally considered correct.

Whenever someone posts a link about these, I get an irresistible urge to post a link to an article with pictures of one being moved by helicopter, so here goes: https://digitaltmuseum.se/0211812518755/flygvapenmuseums-fut... (in Swedish, but Google Translate usually handles that fairly well).

Unfortunately you cannot check the insides, but it's still nice that it's on display.

Funny thing is, a good way of making someone hover their finger over that button is to try to deposit any significant amount of cash to your bank account. One part of the system says "Use cash!", another part says "What is this cash? How did you get it? From whom? Did you give them a receipt? Can you prove that?"

If "the electronics" break down, shops usually can't accept any form of payment at all, because that would be illegal with their on-line cash registers being offline...

The farmer on the market will likely accept it.

Say, hypothetically, I'm a farmer with 2,000ha of barley at 3.3 tonne per ha, are you actually planning on paying $2 million in cash for 6,600 tonne to make beer?

Or are you thinking more of a "farmer" as someone selling individual artisan carrots?

The first scenario is done on account & settled later, an established customer/supplier relationship would easily handle a power outage.

Sticking with farmers as I'm in a rural area, still to this day large exchanges of labour and produce take place with neither physical cash nor e-cash forms, maybe at most a ledger note or IOU marker - in the great wash and flow of the seasons emergency mechanical work at harvest time can be repaid with a sheep some months later.

That's the trust of established relations.

Yeah, I think a lot of people regular people when dealing other regular people they trust, the principle of it comes out in the wash somewhere applies a lot.

Only if they have a cash register with a control unit that can handle offline operation. Without that, they would be committing a crime.

Where I live you can buy vegetables off a pickup truck that some guy parks by the side of the road. Cash only.

I remember seeing this machine (or one like it, but how many dual-processor pdp-10’s can there have been?) at Stacken sometime around the mid-90’s. Even then, it was a relic from a bygone era. Strange to think that the computers that were brand new then are now older than this was at the time. Damn, I’m getting old…

Are we looking at the same map? On the one I see, showing western and central Europe, the difference between a great circle and a loxodrome (straight line on a Mercator map) for an intra-European route would be barely visible. And the map is clearly not Mercator — France looks visibly "smashed". Looks like a simple x=longitude, y=latitude projection.

Has the performance of sum on lists of lists in Python been fixed? It used to be pretty abysmal. But I suppose some would say that if you need to consider performance at all, you’re in the wrong language… :)

wow, TIL!

    Python 3.13.5 (main, Jul 15 2026, 20:25:40) [GCC 14.2.0] on linux
    >>> x = [[n]*1000 for n in range(1000)]; import timeit, itertools, functools, operator
    >>> timeit.timeit("len(list(sum(x, [])))", number=10, globals=globals())
    13.009033881127834
    >>> timeit.timeit("len(list(list(functools.reduce(operator.add, x, []))))", number=10, globals=globals())
    12.941937348805368
    >>> timeit.timeit("len(list(itertools.chain.from_iterable(x)))", number=10, globals=globals())
    0.0706032607704401
    >>> timeit.timeit("out=[]; [out.extend(i) for i in x]; len(out)", number=10, globals=globals())
    0.06334403157234192
    >>> timeit.timeit("len([i for a in x for i in a])", number=10, globals=globals())
    0.1232151910662651

mutable is fastest, itertools is just a bit slower, list comprehension is 2x slower, both "sum(..., [])" and "reduce" are 200 times slower!

Yeah this is the kind of reason people dislike reduce

I suppose a graphite moderator would fit the description.

Exactly, sorry for bad description

A font that takes some characteristics from certain kinds of renaissance-era handwriting. See, for example, https://en.wikipedia.org/wiki/Category:Humanist_sans-serif_t... .

Something similar is in place in Sweden. For landline numbers, it is of course easy. A number with, say, a Stockholm area code is not suddenly going to be in Nigeria. For mobiles it is trickier, because a Swedish mobile may very well be in Nigeria. Some additional database look-ups had to be added to the already rubegoldbergesque contraption that handles mobile phone calls.

For those HN readers who are not stationery junkies: The “real” Blackwing pencils went out of production... I don’t know when, but it must be at least 15 years ago, probably longer. (I have only been watching this from the outside, so don’t ask me for details. =) ) Those sold now come from a different production line at a different company, even though the maker is trying to make them as close as possible to the original. Ever since they showed up, pencil aficionados have been debating whether they are better, worse, or about the same. Originals seem to sell for over $20 a piece on eBay (actual "sold" prices, not asking prices).

Thank you! I should have explained more in-depth what I meant. I forget sometimes this is Hacker News and not, everyone has exactly the same interests as me news. I did have quite a few of the originals till I used them and there is such a difference that I had to switch entirely as I just found the new ones weren't that close to allow me to use them in the same way. So I would prefer to completely change method.