skysight-inc/HackerNews huggingface dataset:
Going to a body with atmosphere is easier than going to one without. You get free braking (~8500m/s of delta-v according to Elon, for Mars) thanks to the atmosphere.

Anything without an atmosphere you have to carry the fuel to stop after chasing it down, then land on it slow enough not to die. For robotic missions we can approach these objects in very favorable orbits with transit times measured in years, so the delta-v needed to slow down is manageable.

For human-based missions we have to get there fast. Going there fast means you have to dump alot of speed to stop once you get there. Without an atmosphere, that takes fuel. Not as much as it took you to reach that velocity, since you're lighter now, but still just about as much in terms of delta-v.

I learned this playing KSP. It will open your eyes to the real challenges of orbital mechanics. The hardest planet to land on in the entire game is the one with a mass/gravity approaching the game version of earth, except with no atmosphere. The in-game numbers aren't realistic, but the concepts are.

And hell yes, lets go to Mars. Where do I sign up?
this effective vacuum gives a 10m column of water equivalent of radiation protection. you'll really like it compared to the moon.
Lots of bad data there. Sometimes a company just doesn't work (timing / bad market) and founders learn the wrong lessons.

Speaking from experience.
New York Audience Gives Standing Ovation to North Korean Propaganda
Molybdenum disulfide transistors break through a performance limit
How important is technical defensibility? On one extreme I could have a technically sophisticated product with a poor user experience. On the other, an off the shelf software catalog with great user experience. Ideally you have both... Realistically it is difficult given time constraints. Where does one settle for success?
What do you think of the women in tech movement, and other diversity initiatives?
Ask HN: Is there a general bisect tool?
Everyone loves `git bisect` but is there are more general tool for bisection in situations where you aren't dealing with git repositories?
Writing assertions has a runtime cost that isn't present when using something like TypeScript.

Granted, that benefit is probably minor, but it is a benefit in TypeScript's favor.
Biking in New York City taught me that. I know it wasn't the programming, because that came second. Funny how many pedestrians look the wrong way when crossing a two way street...maybe they're going with 50/50 chances?
same way it actually slowed down: mess with the atmo.
I'm trying to be an objective observer here.

My text classification software marked the third line as the most authentic, most truthful line.

Huh.
Which basemap did you use? The biggest disadvantage of using Leaflet is that you lose access to Google's maps and APIs. That said, Leaflet is much much easier to debug than Google.
Meh. Ultimately people advocate for interview styles they're good at. We all think that we're the type of dev Google wants if only they would interview properly. Give me objective information over "authentic" conversations any day.
Amtrak's New High Speed Rail
A couple years ago I went to a small demo of a hologram machine called the Voxiebox[1] at a bar in Brooklyn. One of the prototype demos[2] was a voxel game called Voxatron[3] in real 3D. I was in an audience of maybe 5-10 people and the prototype machine was a little crude, but it felt like I was getting an early glimpse into the future of computers and gaming. The applications for this kind of tech are exciting to think about.

Until that night I hadn't even imagined that holograms would ever become a reality, and I had also never heard of voxels. It really made an impression on me. I hope they succeed in making their machine viable for consumers because I could tell how passionate they are about it, and how hard they've been working.

[1] http://www.voxiebox.com

[2] https://www.youtube.com/watch?v=vs09W0FMQEo

[3] http://www.lexaloffle.com/voxatron.php
Reviving an old and obscure language is always interesting :)
You can't just brush it off and say it isn't a problem. Having 3 biological parents is incredibly rare and could have weird social effects for the child. It is an ethical concern if it affects how they relate to other people.
Do some open source stuff, go to some open source conferences and make friends with open source people. Eventually the community will be a major motivator.
Eventually you'll find a job doing open source things.
From what I can tell, the printer that that toner cartridge goes in costs $700. Is there a cheaper one?
What are your thoughts on quantum computing?
Coding WebIDE Community Edition for Docker Users
> When art is composed out of the rendered elements directly

I wonder though, would a lot of 'pixel art' actually look better with a different filter instead?
random chance is as good as physics. the earth was hit by a mars-sized impactor allegedly, so if not for the moon, we would have a completely different day length. (assuming there would be some 'us'.)
I had heard about the book. Thanks for the info!
The point is, people think their interview styles are "objective" when they aren't.

Especially people in favor of endless whiteboarding and zombie-like quiz-show sessions.
Legal issues aside (and those are real), there's the morality aspect to it.

Most companies I've worked for had people who thought firing someone was immoral unless they did something criminal. Essentially, its the company's fault for messing up in the hire process, and the employee should not have to suffer the consequences. So the employee stays in anything but the most extreme case.

Freagin sucks.
You haven't mentioned how long your commute is. How long is it? I think that is a significant factor in how much energy you have after your done with work for the day.
> what are the advantages of a Mars colony?

Survival of our species. Protection from an extinction event on Earth. Stepping stone to further expansion (interstellar).
Perhaps I wasn't clear enough so for that, I apologies.

So what I am basically saying is that investigative journalism IS already sustainable it's just not a business.

It's if anything a process or a number of very loosely defined processes if even that.

The process is going to cost whatever it cost to investigate whatever it is you want to investigate and the only way to make it "sustainable" (cheaper) is through the development of other areas which has nothing to do with that process.

The link I reference shows a pretty simple, cheap and powerful form of investigative journalism (he more or proved Theranos was not working).

If you want to break into the US military and steal their secrets it's going to take your whisteblowers to get the information.

So trying to put it into a business context is misleading as it's just really a broad area of snooping around hoping to find some dirt.
Average about 2.5 hours total: 45 minutes x2 for the Caltrain to and from the South Bay, and another 60 minutes of biking to and from the train station. This is at a cost of $190.80/month for the Caltrain monthly pass.
There's literally a dozen ways to structure/ design a storage engine, every one of them has their pros and con's.

MVCC is so popular because it makes ACID compliance much easier to implement, but there is some additional read latency (and management overhead) because storage layout is disconnected from the natural layout.

A storage engine which sticks to the basics could be very fast, with predictable low-latency.

With regards to threading. I know locks are a dirty word, but you do need a single version of truth somewhere. Either this is done through locking or an allocator. Going single-threaded is a valid way to remove the overhead of locking (plus no race conditions!).

Hopefully a single writer, multiple readers is available soon.
There's also a Greasemonkey userscript called "YouTube Center" (https://github.com/YePpHa/YouTubeCenter/wiki) that I've found to work pretty well for an in-browser tool.
You need to show id to redeem the rebate, but not to get in. Effectively enforcing a fee for transferring that's equal to the subsidy.
You may not have bought a Mac to be like everyone else but that doesn't necessarily mean that many others aren't buying Apple products at least partially due to brand status and social signaling.

Edit: I don't mind the downvotes if I have said something stupid but could I get some clarification here? I'm typing this on a MacBook so I clearly like Apple products but it seems like branding and marketing are fairly important to Apple, otherwise they probably wouldn't spend billions of dollars on ad campaigns.
> Keeping humans alive on THE MOON starting from now is vastly easier to comprehend than putting a man on the moon starting from 1950

Fixed. Mars is impossible, for now. We haven't kept someone in space long enough to reach mars nor have we developed a sustainable model that's extraterrestrially tested. Mars has more problems than a moon base, not significantly less (there's a few small pros and cons but being so far away is a major con).

> there is literally no reason to believe we couldn't accomplish it using current levels of technology

Except that we have no demonstrable way to do it, any fantasy seems plausible in comparison. At least try to start a closed biological system with a rat and find out how hard that is, then add the lag-time to service problems and a low gravity high radiation environment, etc. The movies have really poisoned the reality for the US population, but maybe it's part of the PR to raise money. I can understand that, but I won't concede that it's doable yet.
I'm incredibly excited about this.

I would actually like to hear more about what happens on Mars: the steps to generate oxygen, food, energy, water, and the fuel for the return trip. What are the various ways that Mars could be terraformed, and what are the ethical and practical considerations?

I know that this comes on the heels of an unfortunate accident, but I'm in the camp that accidents and mistakes can lead to better process with less risk, and sometimes simpler solutions.

And, I'd like to invest in SpaceX. Whether it's in stocks or bonds, I just want to help.
NewPipe is what I use exclusively now for YouTube (my phone is currently GApps-free). Works great.
> I just finished reading these books for what seems like the millionth time, and Mr. Musk hasn't even begun to answer the questions they raise. What is the legal structure going to be on the 1MM person colony? Who gets to go? What are the transplants allowed to do there? Who rules? Who do the rulers answer to? Are we going to Terraform Mars? If yes, under whose auspices and with what restrictions?

Musk has basically stated that he has no interest in being involved at that end. He has said SpaceX is making the transport, it's other peoples' job to figure out what to do what we get there. He likens this to building a railroad into a new frontier. California was barely populated when the Union Pacific was built, and yet it was not the railway's job to govern the colonies that popped up alongside it.

Now it'll obviously be more nuanced than that, but if there is a viable sustained transportation strategy to Mars, you can bet a lot of people
I don't get how any professional can trust Apple after the past few years. If as a pro, you aren't at the very least actively looking for alternatives to Apple products you are doing your future self a huge disservice.

After using nothing but Apple products for a decade, I am being forced to wean myself off them, because I cannot depend on Apple for the tools of my trade. What they've done with their Pro hardware is ridiculous. Even if they release the greatest computers ever released for Pros in a month, their history over the past few years makes them completely unreliable.

Final Cut Pro, Aperture, MacBook Pro, Mac Mini, Mac Pro, XServe, OSX Server, form, in one way or another at least a majority of their pro offerings, for any useful definition of the word Pro, and Apple's behavior with these products have ranged from dumbing down, to neglect, to straight up abandonment.

And it's not just pro users, but also "prosumers". iPhoto, Mail, Calendar, iWork all been dumbed down to the point of not being able to serve any prosumer needs.

Apple provides experience and value to consumers that seems far beyond their competitors but their actions towards pro users couldn't have been more clear in their intent. Lip service with an occasional teaser to keep you hooked.
>The earlier classes are exactly the place where things like prior experience and level of interest can possibly explain bimodality

Ok? This is claiming bimodality doesn't exist, not trying to explain it.
If I can make a recommendation, you should try making a video instead.
> That's why I would say it's a success to everyone but the investors who never got their payday.

Yes, so it would not be a successful venture backed company. Lifestyle businesses are fine if you pay for them. When someone else invests and expects a return you need to provide a return to be successful.
I read the first one and thought it was dull. I would not have read the second, but I had it on hand. It started to perk my attention. Enjoyed it. After three, I was hooked.
Complex materials self-organize into circuits, basis for multifunction chips
What's important to us is business defensibility.

Sometimes the way to get that is with a user experience. Sometimes with technology. Often it's something else entirely. It really depends on the company.
> some armchair "expert" comes out the woodworks to tell you how it won't work or can't work.

“Always listen to experts. They'll tell you what can't be done, and why. Then do it.” - robert-a-heinlein
People don't even understand how important materials science is. All they think about is digital/hype technologies.
More tools along the same lines: cclive get-flash-videos iview-cli nomnom pafy svtplay-dl quvi nicovideo-dl WWW::YouTube::Download
> Sam is just one of many partners in VC firm, nothing outstanding though.

He is the President.
I would guess the answer is "no", not that it matters. If you don't think the story belongs here then just downvote it.

Stories are considered "interesting" or "uninteresting" based on how people vote on it, that's pretty much all there is to it. In my entire life, I have yet to see any good come from people who are not interested in something complaining to people who are interested in something that they shouldn't be interested in whatever it is that they've expressed an interest in. Which should not be interpreted as me being interested in this story, which I most definitely am not. But if other people are, good for them.
I know! Google should make a separate app for each channel :)
Falcon Heavy will use 27 Merlin engines, not Raptors. The Merlin is already being flown in Falcon 9, and they're producing dozens per year. The Heavy is basically a Falcon 9 with two more Falcon 9 first stage cores strapped on the side as boosters.

Though I think there is talk of moving all Falcon to the Raptors eventually.
The good thing is it works on gram negatives which we really need new antibiotics for more than gram positives. I would be concerned how non-toxic it in humans as peptide antibiotics have historically been pretty nasty with lots of bad side effects.

Here is the link to the abstract [1].

1. http://www.nature.com/articles/nmicrobiol2016162
U have to. U never know when some dumb nigger is gonna go the wrong way and commit to their mistake. Fuck Kareem
Hi Sam, in interview with Elon Musk, you asked him 'Do you think people that want to be useful today should get PhDs?' Elon: Mostly not.

Here are my questions:

1. Do you think people need to get a PhD degree to become useful research scientist in AI industry?

2. Do you think people need to get a PhD degree to become Member of Technical Staff (Machine Learning) in Open AI?

Thank you.
Sorry but if Microsoft is doing it.... it's probably not going to be great.
What am I missing here?

I paste a Youtube link into one of the hundreds of Google results for "Youtube downloader" and I get a bunch of clear Google video download links in various formats.

I paste a URL into "PWN Youtube" and I get this (buried in a mass of other text I don't care about, hard selling me to spam the site on FB/Twitter/Friends):

Download this video as FLV or MP4 files
Use one of: Peggo | Telecharger(warning) | SaveFrom
9xbuddy(warning) | File2HD (?) | Dirpy(warning)

If I have to jump through another hoop of visiting some other dodgy website - some literally have warnings next to them (!) - to eventually get a download link, what's the point of "PWN Youtube"? Why don't I just use the dodgy sites directly (or, even easier, use their bookmarklets)?

> This website is not affiliated with YouTube.com "YouTube" is a copyright of YouTube, LLC.

Probably shouldn't be using the word/trademark in its domain name then.
Two related questions.

It's known YC prefers teams. Do you have a preferred shape or size for the team (2 tech, 1 marketing, or 1 tech, 1 web, 1 marketing and business etc); is any combination shown to be more likely to succeed within YC?

How do you view teams too heavy on tech? It's common for a group of tech people to have the idea, but as a team have some gaps on say the marketing side, and probably other areas.

A startup I was involved in, years ago, lacked much depth in sales and marketing. Filling that gap was a nightmare. Candidates would happily talk out of their hat, claim allsorts they didn't have, and those we trialled failed hard then invent no end of "reasons" why it's working perfectly. Suddenly recruiting programmers was easy!

Even people we've known in this area suffered from at least some of these habits, sometimes meaning it's a case of "nice guy, don't trust him as co founder". Made it hard to resolve, so the least worst techie got stuck with site copy etc.

No surprise, I've learnt much more about online marketing since those days. :)
Hey. We received an email saying to reapply because we were in the top 10% for the last cycle. In this case, what order do you look at the application? How useful are alumni recommendations?
> Maybe, but who has a particular desire for the data of people without discretionary income?

That's the big question, maybe government agencies and other non-profits who want to connect with these underserved communities, unfortunately, I'm not sure how feasible that is.
APL is like Assembly
I have two questions about your challenge. How many times am I allowed to give you people that you can't teach pointers to? And how rich are you?
Earth is still more hospitable in the case of your giant asteroid. Those in nuclear submarines and bunkers will survive unless they're very close to the epicenter. When they emerge, they'll find temperatures and atmosphere which are much more hospitable than on Mars. The survivors will also be able to scavenge abundant refined metals from the dead for rebuilding.

We can also start improving these facilities today, if we care about the survival of homo sapiens. Even out the gender ratio at Cheyenne mountain, give it a small nuclear reactor, a hydroponic farm, and a seed bank and we can be reasonably confident in it weathering anything but a very near miss.
When the stack trace is inscrutable, I find binary search debugging to be helpful. Comment out half of the functionality, see if the error is still there. Narrow the search to the half that is causing the problem, rinse, and repeat until the offending line of code is found.

However, if the error occurs inconsistently, this approach can be much harder to use.
It's helpful when the critic poses at least a fraction of expertise and experience as related to the subject of the people who's idea is being criticised.
Hating systemd is like hating Hillary Clinton at this point. It's well past time to suck it up and make peace with your next init system/President because the only viable alternative(s) are far worse.
And yet there are two companies that live stream product launches and get lots of media attention. Apple and Tesla/SpaceX. So I would say his public speaking skills don't matter to the crowd of engineers and geeks. Maybe, just maybe the product speaks louder than the words?
DVDFab Big Autumn Sale Is Unveiled -with Up to 30% Off Dicount
>Did Patitsas et al. make an error in citing their sources?

An error if you are very generous. It appears to be deliberately lying about what the source says to match it to the pre-selected explanation they are pushing.
I'm supportive, obviously.

I think in some ways diversity in tech is very bad (e.g. very many, or perhaps nearly all, of the CEOs of 'unicorns' are white men).

I think YC has made good but not great progress here. I don't pretend to know all the answers. About 11% of the founders that apply to YC are women, and I've heard that's a fair bit higher than what other investors see.

We fund women (and Black and Latino founders) at very nearly the rate they apply. In addition to a pipeline problem, I think there are further problems once women and underrepresented minorities start companies that make it unwelcoming.

I also think the conversation has become so polarized by the extremes on both sides that I feel uneasy participating, and I know other people feel the same way. But I'll certainly keep doing whatever I can do to get YC to help.

We're always open to advice about what to do here.
If you went back in time and did Loopt again, what would you differently?
I get that you're probably using the word in a more popular sense, but I don't see what "logic" has to do with this. Correct inference has to start off from somewhere. If a person had literally no idea of what they were doing, they wouldn't be able to judge whether it's doable or not either. Teaching a kid logic wouldn't prevent him from believing Santa Claus was real, but teaching how implausible is it for someone to circle the globe on flying reindeer visiting every single child's house during a single day might.

I find it hard to believe that there are people actually drilling their iPhones, though. I mean, no matter how clueless they are, they could've still googled it, right?
That's the outside view. For a inside view, it's pretty much résumé-driven development. Everyone in the team wins.

And offline stuff won't happen on the main Youtube app because politics.
Is this specifically your order, or does everyone review in that order?
Show HN: _theInitialCommit: An exploration of the people behind the projects
1. No

2. Definitely not!
Pick a different market.
On electric you have transmission losses, charge losses, discharge losses, losses in the motor controller and losses in the motors. Most batteries aren't better than about 80% charging and about the same discharging. So 0.8 to the fourth, or about 40%
> we're not sure why

I expect it is early burn rate and simply getting too far ahead of your potential income. Half the founders means twice the runway.
I think you are reading too much into my question. I am not complaining, simply wondering. Perhaps pilot is a lang that is interesting, or there is something else there that is interesting that I missed.
No particular shape, but in general we'd rather see it be overweight tech.

If no one on the team is good or is willing to get good at sales and 'business', that's a problem.
I don't doubt that this won't fly in the traditional sense, but at the very least NIH is also a wheel for diversity. It is clearly interesting to see what can be done there.
Well, he has never been able to memorize the multiplication table. But if you try to get him to solve 10 x 13 he just can't do it. But he can solve 3 x 3 with a pencil, paper, and his fingers or some manipulatives.
I'm not sure what the threshold is for being able to downvote stories, but it's pretty high.

Those that have that power have a great deal more control of the front page than those of us that don't.

We're relegated to trying to exercise our power through snarky comments and distracting meta conversations about the voting system.
If you are a billion dollars business, they would love to talk - geographies don't matter.