skysight-inc/HackerNews huggingface dataset:
"Up to" is reasonable because it varies so much. Energy efficiency of cycling depends strongly on aerodynamics. A fully faired recumbent like you see in the human powered vehicle record attempts will do much better than a normal upright bicycle, probably better than 5x walking. Skin-tight clothing vs. normal clothing makes a big difference. Even shaving legs makes a very small but measurable difference. And because drag increases with the square of the air speed, aerodynamics is more important when you're riding fast. This contributes to the wasted energy on hills too, because you descend much faster than you ascend.

For these reasons it doesn't make much sense to talk about exact figures for energy efficiency of cycling without specifying what type of bicycle, what clothing, what weather conditions, what terrain, what braking technique, how much the rider weighs, their riding position, how fast they're riding, etc. The tires and the drivechain make a noticeable difference too.
NPM packages: they ain’t free, you know
https://news.ycombinator.com/item?id=12255498
So, having medical training fails to provide you with the most basic survival skills.
It has nothing to do with being there on Saturday. It has everything else to do with the kind of people and their ability to invest themselves in their goal, and showing up on Saturday is a great indicator of that.

I interview a lot of programmers, and I can tell you with about 95% precision whether they will work out and be great based on the single question 'tell me about the programming projects you work on for fun'. If they have some project they work on for fun, even one, that isn't for a class at school or for their job, then they are very very likely to be a great hire. If they don't they are very very unlikely to be a good hire. Side projects don't magically make you smart and capable and good at problem solving and getting things done, but it sure seems to be fundamentally related.

And from personal experience, I've worked for 2 startups, one where people worked all weekend and one where they didn't, and interestingly they were doing almost the exact same thing. One had an $80MM exit, the other just slowly went away. Small sample size, for sure.
This analysis makes the same mistake that innumerable other analysts have made before: that going a mile is something worth doing. If you stipulate that everything is a mile apart, then you're guaranteed to get this outcome.

The point of walking is that if you throw out the cars then everything is much closer together, and then you don't have to walk a mile. If I start from the Ferry Building in San Francisco and walk a mile up Sacramento street, I'll pass thousands of establishments of all kinds. If I start at the Ponte Vecchio in Florence and walk a mile I will pass literally every single thing there is in the old city. In a walkable city you'd never need to walk a mile, so finding out what is the most energy efficient mode of going a mile is relatively pointless. What you actually need to know is the most energy efficient form of building, not the of transport.
Second Amendment Remedy to take care of another high-profile woman who bothers him

No mention of politics, only whether it is "bothering" the potential killer, which might as well be a due to relationship dynamics. If he was going to make a statement that maligns half of the population, make it specific.
>Hopefully you also don't mean XML, which is terrible to parse with standard UNIX tools like grep, sed, and AWK. More complications for negligible gains.

I'd prefer a type system so I can use these tools like a library. Most of them only work on piped data or files.

A recent example is that I needed to diff files. There are existing programs and I didn't want to reinvent the wheel, I just needed that particular wheel to build something else.

To use the existing programs I had to write to a file, which is too slow for my use case. It would be much easier if I could hand these tools a pointer to my in memory data structures and get the diff back in another structure.

This is one reason why we often see libraries replicated /bin. Powershell did a good job of solving this (but was too flawed in other ways).
> it’s anywhere from 33-400% more expensive to drive

The article's conclusion including ownership cost fits my intuition pretty well.
Reference: Kawauchi, Akio, and Tomoko Yanagimoto. "What Is Knot Theory? Why Is It In Mathematics?." In Teaching and Learning of Knot Theory in School Mathematics, pp. 1-15. Springer Japan, 2013.

http://link.springer.com/chapter/10.1007/978-4-431-54138-7_1
It's actually efficient to do it this way. The price may be higher b/c buyers are willing to pay a premium to buy coins off-exchange.

Also interesting to note that in previous auctions it looks like USMS only conveyed a "bill of sale" for the bitcoins. We don't know what arrangements were made for conveying the bitcoins themselves. I would speculate that they were transferred to a wallet designated by the buyer, but it's possible they were not.
Of course not. But it's vastly easier to liquidate. Someone will make an instant profit, upon acquisition of these coins.
Didn't they seize a lot more BTC from Ross? I heard something in the amount of 150,000 coins.
"So, the thing that is hard to do, that I try to do,
is to come back and think that everyone is trying to do the right thing, which I believe is the right place to start. If someone’s doing something that doesn’t make sense, there’s a reason for it and we need to understand their reasons. We make our best progress when our efforts are to be empathetic and understanding of what’s going on in other’s lives."

So, so true. I'll also recommend his book Creativity, Inc. - what works for Pixar might not all be directly translatable for the software industry, but there are some good lessons and experience (and entertainment) in there.
3 Foundations of a Successful Data Integration Job
Then its fine. I don't need anything fancy. :)
Thx!
Yeah i should have suspected. Have not set foot back there in ages though. Thinking about it i guess schools may be some of the most hostile computing environments in civilian life.
Point, but there is generally a specific timeframe for documents to combat that tendency. Usually ~25 years. The document in question here is only 20 years old, even if the information it references is older.
> When a consumer buys a product on their site - they have employees purchase from retailers or suppliers and ship.

Walmart brings the solution to that to the table. They already have the merchandise, and infrastructure. While the general opinion of Walmart is that they are terrible, Walmart's distribution and transportation infrastructure is King in that world.

Currently Jet.com fulfills orders by just going to the stores and purchasing and shipping.
> All of the information of our world is contained in text

Communicate the concept of "green" to me in text.

The sound of a dog barking, a motor turning over, a sonic boom, or the experience of a Doppler shift. Beethoven's symphony.

Sour. Sweet. What does "mint" taste like? Shame. Merit. Learn facial and object recognition via text.

Vertigo.

Tell a boxer how to box by reading?

Hand eye coordination, bodies in 3 dimensional space.

Look, I love text, maybe even more than yourself. But all these things imbibe, structure and influence or text, but are not contained in them.

To make substantial inroads to something that looks like human esque AI, text is not enough. The division of these fields are artificial and based on our current limited tech and the specialisation of our researchers, faculties and limitations.

When we read, we play back memories, visions, sounds, feelings, etc, and inherent ideas gained through experience of ourselves as physical bodies in space.

Strong AI, at least to be vaguely recognised as such, must work with algorithms and machinery that understand these things, but which then works at that next level of abstraction to combine them into proper human type concepts.

Of course, there is the question about why we would want to create a human like AI, it's my contention that human like AI isn't actually what many of us would want, but that's another topic...
If you want to go 'slow and steady' and have great 'work/life balance' (and work with a lot of mediocre people and play a lot of political games..) go get a job at a big company.

Startups are not for that mentality, no startup has ever won by playing it safe and making sure people get plenty of sleep.
I eat a lot more running 30 miles per week than zero. And I drive, sometimes. :-)
Not really, I don't like cycling in the city (not secure enough about not being plastered by a truck, especially considering how little fuck UK drivers seem to give) so I walk to work for almost 2 years now.

I started because I wanted to lose like 8-10lbs during a time when I couldn't exercise regularly at the gym which were lost within about 6 weeks.

I walk fast at about 6KM(my gait isn't very long because I wear either jeans or dress pants and I am of average height, but still I'm doing 130-135 steps per minute) an hour according to Google Fit/Apple Health, and I walk between 11-15KM a day (~2-2.5 hours I take a longer route through Hyde Park if the weather is nice and I'm not in a rush getting to or from work).

This daily walk alone increased my daily rough caloric requirement to about 2800-3000 calories, that's 600-800 (k)calories over my daily default if i don't do any physical activity other than getting up and commuting to work on the tube.
If i don't increase my caloric intake i would lose between 0.5 and 1 KG a week so in this case and in every other case the "food expenditure" isn't a sunk cost, now you might say that my caloric intake doesn't have much impact on the grand scheme and you would be correct, if I need to eat another slice of pizza or another muffin it doesn't affect anything in the long run, if anything it probably means we might "waste" a bit less food.
But given the current cost of each food calorie that you intake if everyone all of a sudden goes up to 3000 Kcal daily requirement it will have an effect on the environment and the economy.

What you should take from it is not that walking is bad for the environment but is that the global food production is highly inefficient ATM, food is cheap especially in the US but it comes at a pretty big price also.
I'm really surprised at the comparison of motorbikes to cars. I don't own a motorbike, but my impression was that compared to cars the fuel costs are trivial. This data suggests a cost reduction of only ~25%. Was it dumb of me to expect a cost reduction of >75%?
Sure, that's basically the foreign exchange market.
It's only 2,800 coins. Why would anyone bother paying above market for that block? I would assume, if I went to an exchange and purchased 3,000 coins, the exchange price wouldn't go up much. But maybe I'm wrong on that, and BTC is thinly traded? I haven't been following it lately.
New windows application that only target windows 10+. Backwards compatibility is a major limit to it's adoption.
I learned what Dyson sphere is as by product of reading this by Bruce Scheiner, really great read:

" One of the consequences of the second law of thermodynamics is that a certain amount of energy is necessary to represent information. To record a single bit by changing the state of a system requires an amount of energy no less than kT, where T is the absolute temperature of the system and k is the Boltzman constant. (Stick with me; the physics lesson is almost over.)

Given that k = 1.38×10-16 erg/°Kelvin, and that the ambient temperature of the universe is 3.2°Kelvin, an ideal computer running at 3.2°K would consume 4.4×10-16 ergs every time it set or cleared a bit. To run a computer any colder than the cosmic background radiation would require extra energy to run a heat pump.

Now, the annual energy output of our sun is about 1.21×1041 ergs. This is enough to power about 2.7×1056 single bit changes on our ideal computer; enough state changes to put a 187-bit counter through all its values. If we built a Dyson sphere around the sun and captured all its energy for 32 years, without any loss, we could power a computer to count up to 2192. Of course, it wouldn’t have the energy left over to perform any useful calculations with this counter.

But that’s just one star, and a measly one at that. A typical supernova releases something like 1051 ergs. (About a hundred times as much energy would be released in the form of neutrinos, but let them go for now.) If all of this energy could be channeled into a single orgy of computation, a 219-bit counter could be cycled through all of its states.

These numbers have nothing to do with the technology of the devices; they are the maximums that thermodynamics will allow. And they strongly imply that brute-force attacks against 256-bit keys will be unfeasible until computers are built from something other than matter and occupy something other than space."
So whose face is in the effect just after the Dr. Who logo appears in the tunnel? Watch for it in the upper left of the tunnel.
oh wow thanks for that. That's /much/ better than my DIY solution of using selenium to automate it...
Yahoo View
Interesting. I think the article would benefit from a graph of the raw data, i.e., calories per mile, in addition to dollars per mile. I actually wouldn't mind paying more for food, in return for the pleasure of walking or biking. At the same time, walking and biking are not an option for a lot of trips, depending on distance and cargo. Since my daily bike commute is 8 miles round trip, it's a pretty inexpensive pleasure.
Part of the military culture, there's no glory, no medals, no promotions in a successful defence

"Department of Defence" is so PC, things were much more honest back when it it was called the "Department of War"
My dad does this every year with Poison Ivy on his farm. Claims it works.
Gonna check it out, thanks.
Well if this task is trivial to parallelize.. I would spin up 100 GCE machines for 1 penny each per hour after today's price drop (combined total of $1 per hour for 100 CPUs of action).. and pull those few million files and dump to a cloud drive in 1 hour flat.

It's a tricky sweet spot PyPy has. Certain tasks that need CPU power but not too much CPU power and you want to spend time to make it run in parallel but not too much time to make it run across many machines.

(By no means am I a PyPy or CPython expert. Just toyed with them and want to understand the bounds...)
>> so advanced in its design and execution that it could probably have been developed only with the active support of a nation-state

Why is advanced technology automatically assumed to have the backing of nation-states? Cant several highly motivated and smart individuals create the technology without a nation-state behind them?
Why not a Dyson-like moon coverage which allows us to regulate the night and day illumination provided by our celestial satellite?

Solar operated mirrors whose focus and intensity can be regulated remotely.
This is a sale of bitcoins for USD. Of course there are foreign currency exchange markets?
link: http://www.securityweek.com/chinese-attackers-conduct-cybere...
I believe you replied to the wrong person. I never made that claim unless I am going crazy.

speedtest-cli has a lot to offer as a tool
Oh yes my ansible brothers and their lack of Python3 support ;)
No, not unless you take full control of their diet (they'd probably object to that). People respond to extra work by eating more.

> But the argument could be made that the average American runs a calorie surplus

It really can't; running a calorie surplus would result in constant weight gain. What you actually see is extreme weight stability.
And then everything sends a different payload in their XMPP messages, and everything is broken again. XMPP is a possible part of a solution, but not the solution alone.
Why put it off until tomorrow? Quit now.
The other option, which is what I generally feel, is a sense of purpose that we need to make sure we shepherd the human race in the small way we can to the eventual goal of something like this. That is, it's engendered a bit more thoughtfulness about not just what policies yield the best current outcome, but what if we took a path of advancement slightly less optimized for current ease and happiness and more for future gain?

We are of course very far from being able to correctly plan and carry out anything like that if we really wanted to, given that our current advancement is almost entirely directed by market forces and psychology that we are just beginning to understand, but it's an interesting thought experiment.

Can you ethically deny X people currently for the betterment of n*x people in the future, assuming population growth and expansion? If so, what's to keep us from enslaving all the current people in pursuit of ultimate happiness of some theoretical future? If not, why are we saving anything for future generations rather than consuming it all for our benefit right now? The extremes are of course easy to answer, but the variables that go into it make it interesting to think about.
> tldr: $100k/hr is not at all an unreasonable level for a software developer to value their hourly time.

I was with you until you added the k to the last line ;)

But yes, I don't think looking at a dev thing and valuing my time as $100 an hour is that far off. Even if it is off by $50 either way, it makes math easier...
Unlike other speheres it's made from transparent plastic and doesn't lose suction.
For Sale: 10kg of gold. As of today 10kg of gold equals $X (source: google)

For Sale: X gallons of gas. As of today X gallons of gas equals $X (source: my local gas station)
Came here to suggest this.

Pandora's Star is an excellent (albeit long) read.

Note however, the author is Peter F. Hamilton.
This sounds great, until the tyranny of the masses decides to accept something terrible.

Pure Democracy doesn't work, as evident by the social mobs we now have on Twitter and Facebook over half-truths, non-science, and rumors.

I certainly don't want important things decided this way.
I think I've seen something around ~11k BTC volume per day on coinable exchange, so you are somewhat right, especially if you spread your trades over a period of a few days.
Exactly... If you would include the manufacturing/r&d/transport, walking probably would be the most efficient way if looking at just one mile
'Faceless Recognition System' Can Identify You Even When You Hide Your Face
The article references the collaborative work done by optical physicist Charles Falco and famed artist David Hockney on Renaissance painters:

https://en.wikipedia.org/wiki/Hockney%E2%80%93Falco_thesis

I recall this thesis was quite disruptive within the world of art history; there was significant (and vocal) pushback from people who had spent their lives researching these famed artists who were now being confronted with the use of aids (I make no comment here as to any impact on the 'art'). Articles were published in both art history publications and IEEE journals.

Falco was a professor of mine in graduate school, and is both a great lecturer in his field and unique in the breadth of his outside interests.

I think why I found this topic particularly fascinating was that it took the combination of an artist (Hockney) to start the hypothesis -- the paintings were too "real" to his experienced eyes -- and a physicist (Falco) to confirm the theory through scientific analysis (along with some art history!).
Pretty sure you mean Peter F Hamilton, there. Alexander was a different guy.
I moved to San Francisco without knowing a soul. I started going to a Steelers bar every Sunday during football season and it's where I met my first new group of friends. It was a lot easier when everyone around me was talking about the team/game.
How to encrypt user passwords
Those people will probably more than make up for those costs later in life.
That said, the more classified stuff you have the more it will cost you to keep track of. There's literally a dollar cost for classifying information. I'm sure there's a few people at the NSA who would rather use the money spent on storing classified information to circumvent the constitution.
They also have slow.com... speedtest.net might be dead.
Gotta love malicious compliance.
> the quality of service was good.

But that doesn't make it a good business. And when it's not a good business, it gets scrapped.
Not really. If you die at 70 rather than 90 then your total earnings were probably pretty much the same.
I guess the issue is surplus relative to what - recommended daily calorie intake vs. the calories required to maintain excess weight. My point was the former, yours seems to be the latter.
...and it costs $500.
Welp, a corollary of what I said is that it's better to flirt with people outside of work.
I was obsessed with the idea of dyson spheres when I was younger. The are the alternate path of an advanced civilization besides exploring the stars.

You probably wouldn't want to build one around our Sun, since it will eventually expand, and cook anything inside the sphere. Building the sphere would likely take millennia, and there is no reason to invest in building around a start that will eat it. Instead you would build it around a red or white dwarf. These are stable for billions or trillions of years. Meaning you could build a dyson sphere, and live on it until the end of the universe as we know it (Stelliferous era).

Red dwarfs are much less massive than our star, so you could build a smaller sphere (still relatively huge), and material property requirements would be less. White dwarfs are a bit more massive on average, but will last much longer.

Dyson spheres, bubbles, rings, whatever would not experience a day/night cycle. So would either have to build it out of a material that passively radiates excess energy out the other side, while maintaining habitable temperature. Or you build a second set of smaller rings or disks that orbit closer to the star at a different rate. The inner set casts shadows on the outer set, simulating a day/night cycle.

Successfully building a dyson sphere would likely only be done to either power a FTL gate of some sort or a giant computer. If you built a computer to simulate a universe, and properly managed the inner star's output and lifecycle, you could feasibly escape the end of the universe by simulating a smaller one for yourself.
P.S. I wasn't sure if this should be a Show HN, because it's a blog post, though it's got code to play with.
Not with that attitude you won't.

What makes you so certain you will never live to see it? Be proactive and move your efforts to life extension and dependent technology.
I don't think this is right. I worked in military intelligence and for a civilian agency.

Tons of stuff is classified, sits in a safe for years and years, and eventually just gets shredded. Probably 99.99% of it. There is a cost to declassify documents, but for the mountains of stuff that never gets declassified (because it just goes into the memory black hole) there is no cost.

Honestly I think there is just a CYA mentality to just slap SECRET on documents rather than trying to thread the needle and figure out the exact correct classification. In theory these documents should be classified at the paragraph level, and in that case things like public statements by public figures would be unclassified even if they were a part of a highly classified document.

People will properly classify things if there is some reason to, but day to day it's not trivial to do and in the end nobody sees their goal as 'get the exact right classification on everything' vs 'find a terrorist or figure out what russia is planning'.
It isn't 1995, this is exactly my point. If we're trying to design new systems, we shouldn't design them with the exact same problems. What's the point of "decentralizing" if it just means another Google?
A Prayer for Archimedes (2007)
This is very useful, but I hope they publish the code to perform this test. Sunacle changes stuff all the time to increase performance, and the numbers will change over time.
Ah okay awesome! Thanks.