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Only tangentially related, but just yesterday I learned of Lego's defunct "Modulex" brand, and the serious and apparently widely popular Lego-brick-based project management display boards from the '60s to the '90s.

The small size and comforting pastel colors seemed especially inviting to me.

It makes me yearn for more tactile and actually pleasant-to-work-with computer UIs.


I wonder if there’s a 3D printed version somewhere online

Obviously the biggest contribution to latency is distance. But there's also some close-ish regions with poor latency because there's not fiber running directly between them (for example, over the poles)

Are there an examples of regions which dramatically violate the triangle equality? (That is, where the A--C latency is much worse than the best A--B + B--C latencies)?

Just as a curiosity, could you use that idea to "infer" which data-centers are most likely directly connected by fiber, and show only the likely fiber connections?


I can't speak for AWS specifically, but in my PhD thesis [1] I found a bunch of such examples by using RIPE Atlas probes. Essentially looking for pairs of probes where the RTT between probe A and probe C is larger than probe A-B + B-C.

Now there are some issues with this methodology (all common issues with ICMP/RTT measurements + traffic was not really routed through the "relay" probe), but such pairs do exist.

[1] https://theses.hal.science/tel-03666771/document (see page 84 for an example; if you can read French :-))


> Are there an examples of regions which dramatically violate the triangle equality? (That is, where the A--C latency is much worse than the best A--B + B--C latencies)?

I don't think this would happen at a significant scale, due to how routing works. If taking the "detour" through B is how the ICMP packets get there cheapest, that's the path they will go.

If anything, we could look at where A–C is nearly equal to A–B + B–C and find where such a thing has happened. I suppose it could happen for reasons other than lack of fiber: financially better peering agreements, etc?


There’s very few and poor cables in the areas between Russia/Mongolia/India.

AFAIK, the latency from Mumbai to southern Russia (not that far in distance) is surprisingly high. Much higher than from e.g. Frankfurt to Moscow. Don’t know if it’s enough to violate the triangle equality between Frankfurt-Moscow-Mumbai.


You can just look at the map of fiber optic cables around the world: https://www.submarinecablemap.com/

It's highly unlikely there are any non-disclosed undersea ones since they cost rather a lot to lay down.


> It's highly unlikely there are any ..

Going back decades when a billion US was real money the original NSA (No Such Agency) that essentially no one had ever heard of, including most of the US houses and much of the defence committees that had clearance but not that clearance, had a 4 Billion+ budget for "off-book" satellites.

Black cables are a damn sight cheaper than black satellites.


Yes, although I think it would also clean up the visualization, since you wouldn't have nearly so many lines connecting data centers which actually aren't connected; and it would therefore also be explanatory


There are some regions that have notoriously bad networking with higher packet loss, for example South America and South Asia are pretty bad overall.


From the paper,

> This is, to the best of our knowledge, the first report of fully 3D-printed resettable fuses.

I think unique the contribution is that the entire circuit -- active and passive -- can be made with this one single material. Normally, you need to use many different materials and chemical baths to make a circuit with active components, but using this metal-polymer mix, you can _just_ deposit the metal and you are finished.


_Earned_ income should correspond to productivity.

But unearned income enjoys a dramatically lower tax rate (the capital gains rate is lower than income rate, and capital gains are not subject to FICA/self-employment taxes)


The capital gains rate is lower because the way capital gains are calculated causes nominal price increases due to inflation to be counted as an increase in the value of the asset. This is a pretty dumb way to do this -- just calculate the capital gain in inflation-adjusted dollars instead -- but the current system isn't inherently to the advantage of capital gains. For long-held low-risk assets it typically goes the other way because so much of the "gain" is only on paper but gets taxed anyway. And short-term capital gains are taxed at a higher rate.


What you are calling "unearned income" can still represent production indirectly, since it is income from passive investments, which are supposed to give returns based on creating wealth. It is true that that isn't always the case, however, particularly when such investments can include various sorts of derivatives and other zero-sum transactions.

That said, if no income were taxed at all, any disparity between how the various kinds of income were taxed would go away.


> What you are calling "unearned income"

It's not an ideological framing. The IRS calls it that.


That seems a very elegant solution to the problem of fair income taxes. Just don't tax income, that way you can't have a disparity in income tax. What should we tax instead? Capital seems to me a viable choice. It would be a lot more work for everyone, though.


> What should we tax instead?

My proposal (in the GP of the post you responded to) was to tax consumption, i.e., a national sales tax or something like it.

> Capital seems to me a viable choice.

What would count as "capital"?

Whatever the answer is, this would seem to me to have the same issue as income taxes have: you would be taxing production instead of consumption, hence lowering the incentive to produce.


Are there _any_ generally available consumer applications (document viewers, printers, obscure browsers, ...) that use a TTF font renderer with the WASM feature enabled?


> Plus, being from the 1970s, no attempt was made to make this look like a toy.

This probably isn't just a '70s thing, but a Japan thing.

Even today, toy guns in Japan don't have the tell-tale orange tips or plastic-y appearance; they try to look as real as they (cheaply) can.

While walking up some stairs in a public park, I once stepped over a toy gun left on the edge of the steps. Being an American, the sight of a pistol just left lying in the open a step in front of me gave me quite a momentary shock, before I remembered what country I was in.

My understanding is that this is because real guns are so uncommon in Japan, people generally wouldn't make the assumption that they're not toys.

Supposedly it has the added safety benefit of dissuading would-be-robbers from using firearms in robberies, because even confronted with a real firearm, the victims would assume it's a toy rather than the real thing, and so it wouldn't be as effective of a threat.


> the victims would assume it's a toy rather than the real thing, and so it wouldn't be as effective of a threat.

I dunno... I was once mugged by a guy holding a gun that I was probably 95% sure didn't work. It was a pistol that was rusted and filthy and looked like he'd found it in the ocean or something...

Nevertheless I have him what (small) money I had.

I don't think a lot of people are willing to risk their life on the chance a gun might be a toy, you know?


The homicide rate in Japan is extremely low, owing largely to the extreme small number of firearms in the country: approximately 0.2% of the population own firearms (compared to 40% ish of US households)

In a country of 125 million, there are only single-digit numbers of gun homicides each year.

(The USA has about 20k, with a population a bit more than double at 333 million; about 800x the rate in Japan)

It wouldn't even cross anyone's mind that it is a real gun.


‘owing largely’ is doing a lot of heavy lifting here have you been to the US or Japan?


Americans intentionally kill more people with non-gun means (per capita per year) than either the Japanese or say Europeans or Australians total.

Whatever their problem is, it's not guns.


Yes, the guns just helps with scale.


There are basically no guns in Japan.


A little demonstration would take care of that.


An interesting paper, but some of the other numbers reporting how these catalog sales work are also interesting.

Apparently mailing a catalog to 60,000 people will only generate single-digit purchases for each item, with only about 1000 sales overall.

That's a shockingly inefficient result for all the advertising and junk mail we all put up with, but also not particularly surprising.

It does mean that these kinds of businesses need far smaller stocks than I would guess off the top of my head of each item.


I used to build ecommerce presences, many of which were for old catalogue merchants making the jump to ecommerce.

It was eye-opening. Even in the heyday of catalogue shopping, which this paper is from the tail end of in the early noughts, conversion rates were abysmal - and they were entirely acceptant of that, and didn’t believe it could be improved upon.

Don’t even get me started on print and distribution costs. You’re looking at double digit CPAs on sales. Margins had to make up for it, which usually meant cutting everything else to the bone and really, really pushing finance options.

An interesting part of this was that when they went online they often really, really, really wanted to replicate the catalogue experience on their websites - page flipping, etc. - took a lot of dissuasion, and in one case where they were particularly obstinate, we went ahead with their desires, with the proviso that they would allow us to build a competing site on more traditional ecommerce lines at no additional cost, with the proviso that we got a cut of sales.

They dropped their catalogues entirely a year into the experiment.

Catalogues suck.


> conversion rates were abysmal

Is that surprising? Email campaigns have similarly low open and click rates, which are also accepted as the norm.


Yeah, but on email it costs you $0.002 to hit a target - catalogues, you’re looking more like $3-$15 depending on scale, catalogue size and quality. Those things cost money.


Typically only about 1% of people who visit websites for commercial software buy a licence: https://successfulsoftware.net/2009/04/23/the-truth-about-co...


I sometimes have a look at something but don’t pull the trigger yet, then come back multiple times to look at it again before I buy.

I wonder if that kind of behavior could mean that the real number is a bit higher. For example say 2% of visitors are buying a license but it is counted as 1% because people visiting without buying and then coming back later and buying are counted as different “unique visitors”.


Hard to say as this sort of data is very 'dirty'. Basic analytics will generally take account of returning visitos, but someone might be counted as multiple visitors because they looked at a website on multiple devices.


I used to work for one of the largest tech catalog companies in the US. The largest? Won’t say. Anyway we made about $30 per catalog and we sent 3 a month to millions of people. Our prices ended in 9s but I am not sure there was research behind it, just convention.


"Vertical" cities are cheaper, healthier, and more sustainable to live in than spread-out suburbs.

What makes cities miserable is _cars_, which in most cities are driven primarily by people who don't live there -- since in well designed cities, the people who live there can complete many (though not necessarily all) trips on foot, bicycle, or by public transit.

In the spread out neighborhoods the article is envisioning, anything but personal car transport becomes impossible for essentially every trip. This is bad for your health, the "nature" the author is focused on, and your wallet.

---

Cities don't need to be built hundreds of stories high; two or three story apartment buildings are enough. They don't need to be built with a lack of green and nature; tree lined avenues are pleasant and don't take up much space.


> in well designed cities

Very few cities are designed to begin with, let alone designed well.

Brasília (Brazil's capital city) is one that IMO is designed, and well designed at that.

Living in Brasília (I have never lived there but I have family and have visited many times) feels a bit like living in a small village with plenty of green and living spaces, where everybody knows each other but at the same time you have everything a big city has to offer just a short-to-medium car trip away. Unfortunately it wasn't designed with public transit in mind, but traffic there is mostly kept away from living and working spaces, so noise and air pollution is kept down anyway.

That is, at least the parts that were in the original city design. It grew though, and that growth was organic and disordered like any other city.


Agreed, but for reasonable density you would probably want to go with 4-7 story apartment buildings. Which is what you will see in (most?) bigger European cities.


No, it will _never_ be feasible to collect and transport any meaningful amount of carbon out of the atmosphere.

We emit 35 billion tons of carbon dioxide every year.

That is more than 7x the amount of cement made each year (4.5 billion tons). More than 8x the amount of food that's made each year (about 4 billion tons). About 17x the amount of steel made each year (2 billion tons). About 60x the amount of plastic made each year (about 0.5 billion tons).

But carbon is completely worthless. We can't build a logistics pipeline dedicated solely to moving a worthless substance that is larger than the rest of human logistics combined.


The only plausible result would be something along the lines of a photosynthesis hack to produce synthetic wood at a faster rate than natural processes, which would then have a market value because you could make boxes and couches and houses out of it.

But then you could also use it as a renewable fuel and we'd be calling it biofuels instead of carbon capture.


That's a very good point: commercializing the products of CO2 capture. I wonder if bio-engineering photosynthesis to speed it up is moderately feasible.



>No, it will _never_ be feasible to collect and transport any meaningful amount of carbon out of the atmosphere.

This is obviously utterly false, given how much CO2 has been absorbed each year by current gen CO2 absorption technology.

>But carbon is completely worthless.

Current Gen carbon absorbers turn CO2 into some of the most useful materials on earth, like food, building materials and raw materials for oils and plastics. Much of the current world logistics is already dedicated to transporting their products.


Am I understanding correctly that this is just two 'azimuthal equidistant projections' center on antipodal points, side by side?

(but envisioned as being glued to opposite sides of a single disk)


Yes they are.

It's probably increased accessibility of applied map projection plotting libraries vs. the knowledge of theory and history as formal requirement for making up stuff like this. See also Gall-Peters. Formalizing and marketing Map Projectsions are two separate skill sets.

https://twitter.com/mxfh/status/1363807641932337153

Physplaining [2] describes this quite well, if there is an established body of resarch and astrophysic specialist "rediscover" a specialist area that got reduced exposure with in the era of digital print and publishing.

[1] https://www.mappingasprocess.net/blog/2021/2/17/a-radically-...

[2] https://www.mappingasprocess.[net/blog/2021/2/21/perfecting-...


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