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rm445

1,655 karma · joined January 16, 2011

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rm445··on Ask HN: Best way to host a website for 500 years?
Ah, someone beat me to it. I was going to suggest one of the ancient universities with 800+ year traditions, on the grounds that even once the money dried up they might continue to host the website out of sheer force of habit.
rm445··on Always Do Extra
Really interesting article about enabling longevity and success as a software developer, but it matches my view on all kinds of skilled work: whatever your employment arrangement, treat yourself as an old-fashioned professional.

Like a doctor or barrister, more tied to your profession than to one job. You need to be effective in your role, build your reputation by demonstrating your skills are beyond the bare minimum, and continually develop yourself as you go along. Ideally you get lots of win-wins: your 'extra' is a win for the company in the long run, and you come out of it a little wiser, and over time you're more effective due to the effects of past 'extra'. The benefits of these win-wins can be pretty intangible, but they do build up over time.

rm445··on Introducing raspberrypi.com
Not sure the problem is just wear. The SD card seems unusually likely to be destroyed by power cycles or brownouts.

I don't feel on especially solid ground saying that - although I've experienced dead (micro) SD cards myself. It's a controversial topic, and no doubt some people are confused by what's just filesystem corruption. There are flamewars.

rm445··on Curiosity Is Better Than Being Smart?
That state versus trait distinction is really interesting. I have a very negative view of people's self-perceived traits - for many people, it seems more important to have a story to tell that makes them a unique person, than to be rational.

Presumably some perceived traits have positive effects - driving one's own behaviour with "I'm not a quitter" or whatever. But I find it fascinating that traits might not always be strongly correlated with what people actually do.

rm445··on Curiosity Is Better Than Being Smart?
There are places in those and similar countries where that sort of income will let you own a house and car, raise a family and pets, even fit in a fairly cost-intensive hobby such as sailing/horseriding/cars/light aircraft if you don't go crazy. It's genuinely a slightly confusing situation to be in, compared to reading about Google employees making half a million a year - are you living a great life, or falling behind the modern world?

As a person living in a (relatively for the western world) low-cost-of-living area, making a decent income for a low-cost-of-living area, it sometimes feels like a local maximum. It would take a sizeable income jump to offset low cost of housing. No doubt the top world cities are the place to be, in terms of all kinds of fun and opportunities, but lifestyle would be worse there unless or until you'd broken into a really high income bracket.

rm445··on The biggest churches in the world: Anglo-Norman eleventh-century cathedrals
I was admiring the Sagrada Familia one day about ten years ago, and was astonished when a chap in a high-vis vest walked past me and started chipping away modifying some stonework with a chisel. He didn't look overly enthused, just getting on with his job.

The Sagrada Familia is a marvel, and deserves to be finished, but it was somehow magical to be there while it was (long-windedly) being built, worked on by skilled artisans probably not too different from someone working on the cathedral in my own home town in the 1090s.

rm445··on When users never use the features they asked for
That's a crazy story. My guess would have been, not that the product never worked, but that the delivered version was hacked together in the last 24 hours before delivery and never made it into source control. You know the technical details - do you think something like that could have happened, or really no one tried to use the product even once?
rm445··on Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag
Close my Mac, take it somewhere, open it up - there everything is.

Close my work laptop, take it to the office, open it up - it's hot to the touch, stuck on the Dell high temperature warning screen, and needs to cool down and reboot.

Of course it would be crazy for me to keep repeating this scenario (I tried changing the hibernation settings, and now just shut it down) - but we can wish for it to be better, especially since it's obviously possible.

rm445··on When McDonalds Came to Denmark
France too. It's a shame to eat McDonald's in a country with so much great food, of course, but getting a burger covered in blue cheese served with a beer is a bit better than the standard experience.
rm445··on The Air Force Has Been Trying to Kill the A-10 Warthog for 14 Years
Fighter jet development costs are punishing even for the USA. Going to one multi-role airframe with three configurations was probably intended to keep the costs under control.
rm445··on 6th Generation Stealth Fighter: Joint Effort by UK, Japan, Italy and Sweden?
What's really weird is it's a world of about 200 "people" (sovereign states), completely without outside authority. Historically it has all been about power, with international law having a minor role - but it seems conceivable that all the nations could police one another and all international law could become much more effectively binding.

It wouldn't be as effective as universal pacifism, just like the police can't prevent all murders - but they can deter them. It could be a future that still has nation states rather than a world government, without any superpowers.

rm445··on Job vacancies surge past one million in new record
Seasonal agricultural labour has been a problem in the UK for literally centuries, since the move away from subsistence farming and the beginning of the industrial revolution. Traditional solutions, as well as migrant labour, include benefits such as subsidised housing and a minimal off-season social safety net. Which I guess are a form of higher wages, but more directly applied.

I suspect that the mix of crops could change in the medium term, to less labour-intensive and more automation-friendly ones. Expect lurid headlines and more expensive strawberry jam.

It will be interesting to see whether the government caves to ag-industry pressure and puts in place special summer visa schemes or similar. On the one hand, the current government is fairly right-wing. On the other; they are quite interventionist, aligned with business interests, and dependent on rural votes. And most of all, media-led. I'd guess they'll respond to headlines about fruit rotting on trees with some madcap scheme.

rm445··on Social Networks: It's worse than you think (2020)
Yeah. I guess most people have a complex list like that. In many ways we're actually spoilt for choice when it comes to communication. And the forum we're on right now is quite excellent.

It would just be nice if the big sites were less terrible. If Facebook were once again a nice place to stay in touch with 'real life' people instead of an engagement-driven nightmare. If LinkedIn could be a wider-professional-interests place with HN-quality discussion instead of just recruiters and drivel. If Twitter remained an amazing place to connect with thinkers but not the place for outraging people into campaigning for someone to lose their job. Because of network effects, the big sites eat up a lot of what should be better discussion.

rm445··on Social Networks: It's worse than you think (2020)
Interesting. What you say makes some sense for keeping sane where the Internet is one big room of people shouting, but for preference I'd prefer the total opposite.

I would love to be part of small social media groups with bonds of friendship and tolerance. Trends, food, non-extreme politics, in proportion to their magnitude in everyone's lives, varying with people's interests but not magnified by one-issue echo chambers. Not 100% sure what you mean by normies but I suspect I'm in favour of them.

Group chats with close friends and family fulfil this need fairly well, and are quite relaxing compared to wider social networking. But they're likely only to cover a small subset of every person's interests. Something like the infamous 'Circles' might actually be useful on a larger scale.

rm445··on Multiplying Matrices Without Multiplying
How about using a look-up table for small numbers (say up to 12x12), left shifts for powers of ten, and decomposing larger multiplications into summation of those operations?
rm445··on Adult Obesity Facts
The nice thing about calories in minus calories out is, IF you maintain a calorie deficit, the laws of physics of the universe guarantee you must lose weight. The laws of physics are a pretty powerful thing to have on your side.

But that doesn't make it necessarily the most useful model for a complex animal to modify its own behaviour. We are dynamic systems that can voluntarily and involuntarily vary the amount of energy we expend. Our bodies send appetite signals to our consciousness, which can be pretty hard to ignore.

The only times I've consistently lost weight has been via a calorie deficit. But it's totally understandable that people want another model, either something like keto which purportedly produces weight loss without a calorie deficit by messing with the body's fat-storage mechanics in some way, or some behaviour+diet which produces a calorie deficit but with minimum lethargy and hunger. There's a lot of nonsense around dieting but the basic desire is understandable.

rm445··on Adult Obesity Facts
Do you really think anyone reading this is going to think you're anything other than an obese person with polite friends and a mild case of self-delusion?

Of course, there are many nuances. Your musculature (though surely if you were a bodybuilder you'd have said so). Your sex, both for where fat sits on your body and for social expectations. The clothes you wear. Normal human variation - if your femurs just happen to be -2 standard deviations in length, your BMI will always be higher than it would be otherwise.

Someone with a BMI just into the thirties can still have a good level of walking-around fitness, look good in a shirt, etc. They wouldn't stand out in today's society. But the medical risks are still increased in a statistical sense. It being normalised may make people feel better but doesn't solve the medical issue.

rm445··on My Tungsten Cube (2019)
Bear in mind that we're talking about metallic tungsten here, not tungsten carbide (WC). It's a little slow and expensive but it can be machined in fairly conventional ways, using tungsten carbide tipped tooling.

Tungsten has an enormously high melting point, the normal way tungsten parts are produced, for typical industrial purposes such as radiation shielding, is sintering (powder + heat + pressure) to near-net-shape, finished with a machining pass.

rm445··on Atlas robot does parkour
My guess (as an engineer but not in that field) is that some sort of breakthrough is needed or it will be a long slog. The general problem of robots navigating arbitrary spaces will probably be solved by wider advances in machine learning. Because a robot mapping its environment, planning its motion, and carrying out that motion while adapting to the dynamic environment, isn't being treated as a classic control systems problem any more, but fed into trained nets. It's too broad a problem for even sophisticated control systems, in the general case.

Even once robots can do amazing things, there needs to be an economic use case that's compatible with what they can do, how they're powered, and how long they can work for.

Similar to quadcopters in a way - they have changed the world in some limited ways, but so far they haven't scaled up to carry people or out to deliver parcels, so they remain niche. If someone figures out one day that robots can deliver burritos/assassinate dissidents/stack shelves efficiently, it could be a quick takeoff.

rm445··on Atlas robot does parkour
The foundations are understood, in a 'chemistry is just the Schrödinger equation' kind of way. Any amount of research and engineering is still needed to make machines which can move themselves effectively, be energy-efficient, and interact with the messy and unstructured wider world.
rm445··on It looks like a product but is secretly a subscription
Interesting point about car PCP financing at the end of the article. I bought a car through a PCP a few years back (a new 2013 Mazda) and it seemed fairly humane:

- Nominally 0% interest (albeit we paid sticker price of the vehicle with no discount).

- Deposit + payments such that the car was never 'under water'. In fact, subject to some heavy caveatting about its condition, I think we could have handed the car back and walked away from the agreement at any time, something almost unheard-of in American-style car loans.

- At the end of the PCP period, there was still a big balloon payment, which is how they get you rolling onto a new car+contract of course. But it was a known quantity that was possible to save up for, and due to the monthly payments, as mentioned above, being of sufficient size, the balloon payment was much less than the cost to buy the same car in same age/condition/etc on the open market, so it made sense to pay the money and keep the car.

There are a couple of things I find interesting about the above. One is that I perceived some benefits from the monthly payments being larger rather than smaller - when considering time value of money etc this is presumably irrational. But people do seem to genuinely suffer from upside-down car loans, where they could 'afford' the payments but find themselves trapped making them on an un-sellable vehicle. I guess what I'm saying is the payments were set at a level where I could actually afford the car. The other interesting thing is how easily the formula could be tweaked to make more expensive cars look affordable, and to incentivise rolling onto another contract. The flip side is that such tweaks let the purchaser have a lower payment, or a nicer car for the same payment, but might not be in the purchaser's rational best interest.

rm445··on It looks like a product but is secretly a subscription
It was undercut by supermarkets. In the transitional years when milk float services were still around, they were the more expensive option.

Refrigeration makes sense as the underlying driver - freshness and locality became less important. Then the supermarkets didn't have the cost of the distribution network, and exercised more centralised buying power on the suppliers.

rm445··on Billionaires Claiming Climate Leadership Should Not Promote Space Tourism
We're at the bottom of a deep gravity well. The vast majority of us are never getting out of the well - unless you're talking about after a population collapse.

Thankfully, we're based on replicators - we could colonize the galaxy by sending out only small numbers. But barring some very far-future tech, each fertile world is going to carry a large immobile population, and we're going to have to learn not to trash planets.

rm445··on Ask HN: Anyone here built successful SaaS/startup just for money?
Something not in the comments yet - many people who are motivated by money build businesses around money, the finance sector.

It's a way to stick to what you're interested in, and makes it fairly easy to 'keep score' if your goals are measured in $€¥£. I get the impression too that being close to flows of money often gives good opportunities to make a cut.

rm445··on The Law of Net Design Costs
I took it as: Estimate the costs and pick the option with the best expected value (but apply judgement).
rm445··on If you’re going to put your preschooler in front of a screen, choose a TV
The headline does say 'preschooler'. Minecraft is awesome for kids probably around 6+.
rm445··on Richard Branson ready for today's 'extraordinary' space flight
It's probably a technology dead-end of sorts: it is unlikely to scale, either in the sense of becoming a common mode of transport, or in becoming a more fully-fledged spacecraft. Personally I think it's a beautiful system and an engineering marvel in its own right, but like a lot of super-specialised machines it's hard to say whether they affect humanity's knowledge in a wider way. It's a tourism experience, see the earth from space and try weightlessness around the quarter-million dollar mark.

You could do whatever science a few minutes of weightlessness provides; astronaut training too

It is worth noting that Virgin also operate a separate commercial smallsat launcher company, Virgin Orbital, which uses air-launched rockets, so maybe Virgin Galactic experience helped with that.

rm445··on I might have gone a little bit overboard
Jokes aside, the USA seems to have an enormous amount of local democracy with significant powers.

The side most obvious to outsiders is where it seems to work badly - the bad sheriff who keeps being re-elected, quirks like dry counties. But it's admirable in a way, that people have some power to determine the local rules, together with the freedom to move away if they don't like it. If local democracy were extended further, there would be more variation, and more weirdness, but perhaps it would be a good thing overall.

rm445··on Compare AsciiDoc and Markdown
It does tend to make one worry that all the tools will be hideously un-unicode aware and mangle any non-ASCII documents.

I would like to imagine that in this day and age that isn't the case, but the name works against it.

rm445··on Jeff Bezos: Work-Life Balance Is 'Debilitating Phrase'
Not to defend the tone-deaf comments, but in some circumstances there's maybe part of a point? When you're aligned with your work, when it's meaningful and aligned with your personal goals, hard separations between work and life matter a lot less. You can be in a flow kind of state for quite a while and be happy.

I believe that discounting finding meaning from work is too cynical. But it only exists for some people in some jobs, some of the time. I think the visceral reaction to Bezos' comments is because we know it definitely can't exist in so many Amazon jobs.

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