skysight-inc/HackerNews huggingface dataset:
You do what you would on a terrestrial reactor, and shut down the reactor e.g. by using control rods, or pulling out fuel rods to shut down the chain reaction. These wouldn't be simple radiothermal devices, but proper actively managed reactor cores.

Having said that you absolutely would need active cooling even in a 'shut down' state, probably by circulating a cooling fluid to radiator fins. You might use the same fluid as the propellant or might not. In the former case sure, you wouldn't be able to use all of it as propellant.
It's much more likely to look like NERVA than Orion.

https://en.wikipedia.org/wiki/NERVA

These types of engines have already been run: https://www.youtube.com/watch?v=eDNX65d-FBY
This sounds related to the whole "Republicans pounce" [0] thing.

[0] https://www.commentarymagazine.com/politics-ideas/when-repub...
Outrage on cnn or twitter, for one.
I use a modified nodejs-imapnotify to watch for incoming mail using IMAP IDLE and automatically run mbsync[1] to sync it to my maildirs in ~/mail/. Then, I use mu4e to view them and compose mail.

I've been wanting to try out nmh[2] for a more CLI experience, but the book[3] seems kind of big and daunting.

[1] http://isync.sourceforge.net/

[2] https://www.nongnu.org/nmh/

[3] https://rand-mh.sourceforge.io/book/
Sometimes the best way to hide is in plain sight.
Awesome...I also spent years playing/coding/admining MUDs, though the one I was writing never got very large.

The mechanics you mentioned are interesting; what kind of MUD was it? I got hooked on DIKU MUDs in 1990 or so, and still play https://mume.org:4143/ from time to time.
Does anyone know the state of MPTCP on iOS? I heard they were testing it long ago on iOS. And then we haven't heard anything about it.
Impossible to fix vulnerability (giving root) to all iPhones from 4s to X
FORMATTING AHHHHHH
Yes, there's basically two tiers of Workers for self-service: Free, and $5/month. You only get access to KV on the $5/month plan currently. You do get better speed and more CPU time for those workers, but it's strictly speaking KV that requires the $5 here.

> But conceivably, you could host your blog on the free tier, right, by compiling the static content into the hosted app?

Yes, you could! There's a size limit to a worker though, so for a large site you may not be able to.
Agreed! Your comment reminds me a lot of this 1998 article about the ValuJet crash in Flordia https://www.theatlantic.com/magazine/archive/1998/03/the-les...

Specifically it's the argument in the article that large disasters often have multiple causes. "Perrow says, Murphy's Law is wrong—what can go wrong usually goes right. But then one day a few of the bad little choices come together, and circumstances take an airplane down. Who, then, is really to blame?"

In large disasters, sometimes several not very likely simultaneous failures happen at the same time.

"The ValuJet accident is different. I would argue that it represents the third and most elusive kind of disaster, a "system accident," which may lie beyond the reach of conventional solution, and which a small group of thinkers, inspired by the Yale sociologist Charles Perrow, has been exploring elsewhere—for example, in power generation, chemical manufacturing, nuclear-weapons control, and space flight. Perrow has coined the more loaded term "normal accident" for such disasters, because he believes that they are normal for our time. His point is that these accidents are science's illegitimate children, bastards born of the confusion that lies within the complex organizations with which we manage our dangerous technologies. Perrow is not an expert on commercial flying, but his thinking applies to it nonetheless. In this case the organization includes not only ValuJet, the archetype of new-style airlines, but also the contractors that serve it and the government entities that, despite economic deregulation, are expected to oversee it."
Right - I meant that it can also be accomplished with an old-school analog system, too. It doesn't require a tablet-based system like Tesla's as a baseline.
Surely Warren's electioneering proposal would just result in yet more layers of 'nerd' lobbyists on both sides? Other aspiring presidential candidates are suing Google and laying out plans to significantly cut back lobbying and the ability of politicians like Newt Gingrich and Howard Dean to morph into powerful lobbyists after they leave power. I think less is more in this case with far greater transparency and visibility needed.
> A lot of people told me not it's impossible to do, but it was actually fairly easy.

A weekendware prototype isn't what people are talking about when they say gamedev/MMOs are hard. It's 0.001% of the work, it's trivial.

Just as you, too, stopped at the actual hard part: building the game.
Troy's Breadboard Computer
I would feel better if Facebook ceased to exist. Can they "test" that?
Is this sarcasm?

I have accounts I haven't logged into for years, but still need access to. Losing access over time is not a good feature. And a 'reset' with antibiotics doesn't make sense for a bunch of reasons.

Also, password diversity is a good thing. I don't want $COMPANY_A's data breach to expose my password to $COMPANY_B
Just pay more. I can guarantee you there are plenty of software engineers currently coding dark patterns and rigging Candy Crush or what have you that would prefer to work for the government if they paid competitively.
Section 4.2 of http://lafo.ssw.uni-linz.ac.at/papers/2013_Onward_OneVMToRul... describes it.

> We ensure this by forcing an escape analysis ... of the array containing the values of local variables. This eliminates every access to the array and instead connects the read of the variable with the last write. ... After conversion to SSA form, guest-language local variables have no performance disadvantage compared to host language local variables.

Then if the closure escapes (stored into the heap or something), the escape analysis just naturally fails and the frame is stored on the heap again.
I’m scared about what will happen to my games the day that Steam shuts down. I’m trying to buy from GOG.com but their library is naturally limited
Why Your Blog Is Broken
We Moves Fast to Unbreak Things
I don't know. I believe mankind is emitting lots of CO2, that CO2 is a greenhouse gas, that this might well be increasing the temperature of the Earth.

Beyond that I am filled with doubt. I've read a lot about the replication crisis in science. It started with psychology but has hit medicine especially hard too. Ioanndis' paper had a big influence, where he argued 50%-90% of all research findings are false. The papers about how scientists routinely misuse statistics also. I've seen first hand how enormous quantities of what appear to be scientific knowledge, things people believed were watertight consensus truth for years or decades, simply evaporated once someone who was serious about statistics sat down and tried to replicate the findings.

Likewise with economics. Is an economist making a prediction? Unless that prediction is "the current trend will continue" they are virtually always wrong.

Put simply, I don't trust academia much. I think most people trust academics far too much. The track record of failed predictions whether it be on the economy or the climate is enormous, and there are no repercussions.

Some of the most powerful arguments climate skeptics make aren't actually criticisms of scientists. They point out that academics are frequently portrayed as saints who float above mortal vices like self-interest or greed, vs "Big Plastic" or "evil lobbyists" or whoever who are assumed to be corrupted by their salary. But climate scientists and charity workers like money too. They have the same distorting incentives everyone else does. Important predictions = grant money, it's obvious. Why do people get so upset by this basic fact?

All that said, in the end, it's right and good to move away from fossil fuels. There are plenty of arguments for this that are stronger than "scientists say we'll all die, and this time they might be right!". For instance dwindling supplies of oil, coal and natural gas in regions of the world that are friendly and stable is, by itself, a good enough reason to switch to green power. I have no problem with carbon markets or government subsidies to this end as long as they don't destabilise the grid.

I do have a problem with people presenting any random weather event as "proof" that small children shouldn't go to school though. That's not a useful next step regardless of your presuppositions.
It's easier to make a 2010-era MMO today than it was today. The problem is that "MMO" today now means a 2019-era MMO. Player expectations rise in sync with technology advances, faster even. So if you're targeting a AAA, tech-heavy genre like an MMO, it never gets easier.
There are lots of usecases where the things you mention are either not important or outright bad. My code also allows for extra data processing steps in between should the use case evolve beyond mere copying.

The code above could, however, just deal with references to some file handle and not actually read or write the contents (though ReadFile() or WriteFile() would be less-than-ideal names for such functionality).
This is a great example of marketing the dream of game development. You can make the argument that Star Citizen is a completely different version of the same thing-- I mean in that it is not the game you love it is the making of it. This guy is tapping into what we (on this forum) all love about game design, all the projects people have started or tried in our lives. It is such a drag to make games with huge teams, with marketing and technical compromises, design by committee. It drains the joy of developers and it bores a lot of the audience. This is the dream of one person pursuing their passion.
Urgent race for a reliable drone killer
With a nuclear thermal rocket generally you do 90% of your burn all at once to maximize the Oberth effect then you shut down the reactor. But you've still got secondary decays going on for a while so you slowly use the remaining 10% of the propellant to cool the engine while getting a bit more thrust.
I don't get it: Afaik contentful is a company offering a paid for CMS API, but it isn't a piece of software I can run?
But I must be wrong, I people wouldn't recommend this again and again when asked for a CMS.
I'd love to try it, where can I find it? Wasn't able to find it on github, npm, Google.
> Raising capital isn't success. Profitability is success.

Automattic just raised $300 million dollars a week or so ago.

One vision of success, I'm very sure, is getting acquired by Automattic.
I have been using Zola for about a year and a half now and I love it. However I just use Caddy in a docker container to host it, as Caddy's git plugin can listen for github webhooks. All I have to do is push to git and it rebuilds. I have a post explaining how I set that up. [0]

[0]: https://andrewzah.com/posts/automatically-deploy-your-blog-v...
Yeah, good point. But the process around that allows for it.
If you did more than scan for keywords and respond with flame bait, you'd see I'm all for making it legal. But in the meantime, if people are getting sick and dying from using the illegal stuff, it makes sense to avoid it. My point was that the two opinions aren't mutually exclusive.
"Both sides"? What wild accusations is the defending side throwing?

The details are not 100% clear at this point, but there's a testimonial: https://pjmedia.com/instapundit/339725/

Also: https://en.wikipedia.org/wiki/Marvin_Minsky#Epstein_interact...
>Sure, but I bet Andrej Karpathy's team is using SOTA and mitigates most of the issues like the ones you mentioned.

Can you give an example of an image classification technique where classification failures are independent, or independent enough?
And with technology like CRISPR, you kinda wonder how that will impact forensic science.
Just as good! I used to listen to a lot of death metal as well as stuff like the Cardiacs and other 80s alt music. This feels like a combo of both.
Request for Startups – Crypto, the Future of Money
"I have learned more HTML5 and CSS3 using svelte than any of the other frameworks because it encourages you to use it, because the wheel has been invented already."

This really doesn't make any sense. Not learning how to effectively use HTML and CSS doesn't have anything to do with what frontend framework you're using.
Niklaus Wirth's, "Algorithms + Data Structures = Programs", is also a great read for the last chapter, "Language Structures and Compilers", which is a nice succinct read. It provides a little more formalism than Crafting Interpreters and it's introduction of representing grammar as a syntax diagram was especially helpful for me to visually understand the challenges of having more than 1 token of lookahead in LL(k) parsers.
That's an eerily accurate description of me.
Gut biome actually changes pretty rapidly. IIRC some grad student did some kind of sequencing on his stool for a year, the the populations of different strains of bacteria would completely flip when he ate a salad one day and a cheeseburger the next.

His name was Lawrence David, but I can't quickly find the writeup that illustrates the point I'm making.
“Next week they’ll probably announce that it’s called Coworkr. Deskbook. United Workspaces. Amalgamated Furnished Office Rentals Inc.”
One reason (IMHO) for your last statement is people in general (A) don't understand crytocoin/blockchain blah-blah, and (B) if they attempt to buy some they discover an ATM charges them 10-20% to convert $ to BTC.
Because it's bizarrely xenophobic and has nothing to do with the article?
I don't get it: Afaik contentful is a company offering a paid for CMS API, but it isn't a piece of software I can run?
But I must be wrong, or people wouldn't recommend this again and again when asked for a CMS.
I'd love to try it, where can I find it? Wasn't able to find it on github, npm, Google.
A modern browser is a MUCH larger codebase.
Related:

Gotta love the dutch data center mentality. :)
I'm not right of center and I don't want smaller government. The fact that employees of corporations will provide the government with recommendations that are favorable for those corporations is exactly why I think the government needs a technology office to advocate on its own behalf.
What tdcs device?
Security is a cost/benefit decision, not a binary one. More security costs more. Putting the drivers licenses and bank details of employees in the same database as the credit cards and names of customers is cheaper than putting them on separate databases. Putting them on the Internet is cheaper than having a separate network. Turning off your logs "when you don't need them" is cheaper than leaving them on all the time.

If anyone says "total security is impossible" you just say: So fucking what? That's not an excuse for spending as little on security as possible, and you know someone isn't serious about security if they avoid admitting they are responsible for the security in the first place.
The article has a section about this ("Epilogue: small companies")
The pain of loss. I know. Your mind always tells how different things could have been if only if you did that one thing differently. I wish I could travel the fifth time to the past and probably change my stupid and cruel ways. If not that at least say sorry to them. I can now say sorry to the image I hold of them in my head.
I’m sure gimp etc would have to package a specific .deb to run on this thing - unless as you’re saying you really might be able to mess with init system and startx.
A colleague of mine just starting writing an online book about making a operating system for RISC-V in Rust: http://web.eecs.utk.edu/~smarz1/osblog/
Common Failures When Building Self-Organized Teams
This is called regulatory capture. Once you know the term, you can find some good content on it, like this https://www.thisamericanlife.org/536/the-secret-recordings-o...
You seem to be totally oblivious of the cancellation culture we now live in
His account is 5 years old and has 887 karma. What are you talking about?
Ask HN: Twilio Alternative
What are good twilio alternatives

I see one http://textita.com
Cities most likely to run out of drinking water – like Cape Town (2018)
Honestly, the fact it was stolen inside a government building in Washington, DC makes me even more suspicious. You had some sort of evidence on that phone that someone else did not want to see.
Richard Stallman to Continue as Head of the GNU Project
Being tolerant of intolerant speech, leads to intolerant behavior and intolerant laws. When someone suggests that it is acceptable that there are groups of people who it is acceptable to discriminate against, they are encouraging intolerant behavior against those people.

In this case, it's mild, seems like a statement from the person that they will delete their related tweets, have realized they were wrong in their younger years, etc. would probably be enough. It all depends on extremes.

So yes, I agree that speech and actions are not the same. There is a social response to intolerant speech, and there is ideally a legal response to intolerant actions.
How is that? Did you consider any other tools?
I do think there are some merits to VR (a better gaming experience) but framing VR as a new worldly experience feels wrong to me. There are some arguments for Horizon being beneficial for people whose lives aren't great and they get to let off in a better, virtual environment. How is that different than opioids though - both are temporary escapes from real world problems, and that's just what it is which is an escape and not a solution.
Facebook down for users throughout Europe as THOUSANDS report a total blackout
I worked on a codebase a few years ago that took over 44 minutes to compile... a change you would think should take 10 minutes took 3 days. RSS was still a big thing at the time, and did a LOT of reading while waiting.
Making a RISC-V Operating System in Rust
I had this situation in 2014 with Amex and a very large hosting bill from a server provider (non-cloud, it was a typical dedicated host LLC operation, although fairly reputable). In my case I had even explicitly instructed them to cancel and they did not. I went back and forth with Amex for about six months. The server provider even forged the date on PDFs to make me look wrong. I don’t remember the exact resolution, I might have partially recovered the money. But it was a nightmare.
Canoo plans to offer electric vehicles by subscription
While MDMA is a stimulant, its effect on the serotonin receptors is considerably more pronounced than the effects on noradrenaline and dopamine also found in most other available stimulants. The increased empathy, positivity and feeling of connectedness resulting from that are much more relevant to the experience described by the GP than mere stimulation.
In parallel, how about hiring an army of nerds to defeat meddling in the election both by foreign agents, and by agents hired by domestic politicians. Social media and hackers have more power than corporations now. It's easier to manipulate the people with anger than it is to manipulate politicians with bribes.
I want to note you asked for an honest answer of my perspective and this was down-voted.
Why not use a system akin to that of jury duty? If you fly X type of jet you're in a pool of 'random' testers for X jet as opposed to using data driven methods to shake out average pilots.

I'd have to assume the pilots in some fashion would be incentivised to not be chosen to test for fear of simply being an average pilot in the first place.
Show HN: Earn cashback for reducing food waste – Cherripick – YC W20 Hopeful
Hey everyone - we just concluded YC Startup School '19 and would like to get your feedback on if we are on our way to building something people want.

"Cherripick rewards shoppers who purchase food close to its expiration date. It functions like iBotta - just snap your receipt, item expiration date, and earn up to 30% cashback."

We're launched (closed/alpha) to Google Play, so if you want to give it a go, request access at our website https://www.cherripick.com

Thanks for your time, and cheers to a Cherripicking future!

Get in touch:
Marco Ignacio
Co-Founder
marco@cherripick.com
well that's interesting, I haven't ever really seen SWIM used in a context outside of generally drug related forums and discussion
I'm surprised he got away with it for as long as he did.
Good point, though the author does address that a bit in the epilogue:

Almost none of this applies to small companies. They are so small that the founders and the CEO actually do have a chance of fully understanding problems, which means they don't yet need to delegate decisions.
When a mob lynches someone it's obvious they "had enough" of him. And maybe he even was guilty enough to deserve such a punishment. But we hardly ever think about this, to us a lynched person is always a victim. Why? Because nobody can be so guilty as to deny them a due process. A real justice where the person can face the accusers and defend himself, and be sure that the decision is made by a jury of impartial peers. People who "finally had enough" can only be the accusers in this scene. Where are the others?

Do you really think that insensitivity and vulgarity is worse than mob justice?
It's absolutely a journalist's job to talk about why something may or may not work. News without context or analysis isn't journalism. Journalists have a duty to inform, and a basic retelling of facts is about as informative to the public as a basic retelling of statistics to non-statisticians. Framing this analysis as "subtle manipulations" is disingenuous regardless of how flawed/biased news analysis may be, which is about as flawed/biased as any analysis can be.
Project SPHINX – When the USSR tried to change the computer forever (2018)
>I'll give you the benefit of the doubt and answer your question in good faith: whether you willingly give your information, or are tricked into giving it, makes a world of difference.

The comment you're replying to is positing that question in the context of other people giving up your information, not you yourself giving that information up.

In both cases, the users giving the data knew they were giving that data to someone on the Internet. Their friends, however, didn't. The friends of the (either willing or tricked) participants had their data given up, too. Those friends did not consent in either case.

In that case, I don't think it matters whether your data was given away willingly by your friends or whether your friends were tricked into giving it away. It's just splitting hairs over who is at fault when it's wrong in both cases.
As a dev coming from private sector and now in government, your comment rings true to my experience so far.

It's true that there are many programmers in government who were promoted from within, learned on the job, and are limited on technical knowledge we would expect from a CS grad or a seasoned "software engineer" from industry. In many cases the code is written by contractors under the watch of a government employee who is responsible for delivering the system.

But I have found some aspects very rewarding: guiding new programmers who are eager to learn modern languages and techniques; introducing industry tools and practices to leadership who are excited to modernize/replace legacy systems.

Of course, for every ColdFusion developer who is humble and motivated update their toolbelt, there is one who resents all new technology and technologists. Not talking about the groans about going "agile", I mean people who say "react is silly, I can do all this with jquery! New devs don't know how to do it the 'real' way".

Overall, there is a powerful current within these organizations that is pushing toward new tech and better talent. But I don't know how leadership will manage to bring in new grads and private sector talent while still honoring its promise to promote those in non-technical jobs after years of service.