skysight-inc/HackerNews huggingface dataset:
Sure, Markov's principle matters for some things, but it seems to me Markov's principle doesn't really matter for this particular claim ("for every prime p, such-and-such a decidable property phi(p) is true"), since the only unbounded quantifier is the initial universal one. Any classical proof of a Pi_1 (or even Pi_2, using the Friedman translation) proposition can be straightforwardly turned into an intuitionistic proof of the same proposition (technically, I mean specifically that Peano Arithmetic is Pi_2-conservative over Heyting Arithmetic [and I suppose there are similar results for stronger systems but we don't need those]).

So there is no surprise that this particular statement's proof is constructive, given that it is classically provable at all [again, technically, I am referring to classical provability in PA, but it would be shocking if Fermat's old proof, or any other anyone bothered with for a statement of this sort, had somehow relied on anything beyond PA]. For other more quantifier-complex classical theorems, it would be of more note to observe whether a particular proof could be made constructive (in the mere sense of intuitionistic mathematics) or not, but for this one, there's nothing to it.

Anyway, I think I'm arguing pedantically about something there's no reason for me to argue about at all. Sorry about that! I think we're both in agreement that this is great, its constructiveness is great, math is great. Hooray!
I got a notice about profile being viewed in "private mode". Then "click here to see who it was". I have the cognitive dissonance.
Most any reasonable person can make ~$1500 a year investing that $35K. So it doesn't seem like such a good savings considering you won't make that money on investing it, and you're almost certain to lose a lot more than than $35K if you're at fault in an accident.
I went to Startup School in 2014 (this was at De Anza, not Stanford) and made one good friend at the pre-Startup School BBQ. IMO that alone made the meet and greet cocktail party nature of the pre-event worthwhile. I don't think the "meet people" aspect was nearly as strong during the actual event.

The talks were "inspiring/motivational rather than practical/tactical", and I agree that you can get 95% of the value from the video streams. I think that being in the presence of "luminaries" will bring you back down to earth realizing that they're just ordinary folks at the end of the day.
We can all imagine a case where actual running configuration differs from the intent expressed in those settings.

I think the OP is looking for a definitive statement or disabling mechanism whereby the DHCP client (and subsequently all web browser behaviour) in OSX definitely never honours DHCP option 252, which seems to be the relevant part of the attack described in the article.
How two college students made entrepreneurs fashionable
What JVM microframeworks would you recommend for streaming or async?
In our DARPA Grand Challenge vehicle in 2005, we had a non-computerized system for an emergency stop. A hardware timer had to be reset every 120ms by the computers. If it timed out, a relay dropped out, and an electric motor with two sources of DC power (the main power system, and a battery) drove the brake pedal down until a hydraulic pressure switch detected full brake pressure and turned it off.

In addition, the throttle control went through a pull cable device with an electromagnet. With the electromagnet on, a servomotor could operate the throttle. The emergency stop system would drop power on the electromagnet if the stall timer timed out, or on some other fault conditions. That forced the throttle to idle.

Then we had an Eaton VORAD radar. That data went into the main mapping system, along with LIDAR data, but it also was processed by a simple separate process that computed time to collision from range and range rate, and if it didn't compute a safe distance, or didn't reset the watchdogs, tripped the emergency stop system. If this happened, the LED sign on the back of our vehicle displayed "COLLISION IMMINENT".

This happened once during the Grand Challenge preliminaries. Several vehicles were in the starting gates side by side. We were ready to go, all systems running and armed, waiting for DARPA to release the hold signal they were sending by radio. The organizers decided to release the CMU vehicle first, and it came out of the starting gate and cut in front of our vehicle. The safety systems tripped and "COLLISION IMMINENT" appeared in the sign. After a few seconds, with the threat gone, the system reset and the sign went dark.

This was all fully automatic. There was also a remote engine kill system, required by DARPA.

We didn't win. But we didn't crash or hit anything. There were Grand Challenge entries that ran away, including, in 2004, one from CMU. Another one ran away because they filled their disk with logging info and this stalled the software. Steering and throttle froze, and the vehicle ran away until it hit something.

If you work on automatic driving, you have to prepare for trouble like this.
Ya just don't buy a Mac every two years. It's been so effective for so long, that it's too painful to replace, even if it's far easier to replace than a Windows box.
slightly off topic, but when I saw the images of the trailer, I couldn't help but think that the collision wouldn't have been fatal, if the trailer was fitted with "side underrun protection". IIRC those are required on trucks and trailers driving in the EU.
I'm going to ask a really stupid question, but here it goes: why the need for such precision? (just curiosity)
60 is the new 40 :)
>"12.9-inch iPad Pro"

I had to look this up. It's real. A 13" iPad. Are these still labeled as tablets? Same size as my laptop screen.
Let's be honest - people were even more freaked out by the idea of "test tube babies" a few decades ago. Then, when the world didn't end, and they started meeting people who were actually conceived in-vitro and seemed perfectly normal, they changed their minds.

This is exactly the same way "Enhanced Humans" are going to play out as well. The public is going to be freaked out, but some people will do it anyway. Either locally, or in some foreign country. With time, people will realized that these "Enhanced Humans" are their friends, neighbors, co-workers, and perfectly good people, and their barriers will start dropping. And when the time comes when they have the opportunity to enhance their baby's health/intelligence/fitness, they'll think it's plain irresponsible of them not to do so.

Unless you're worried about regulatory bans, "public fears" are pretty much meaningless. If you can build it, show that it's safe, and demonstrate compelling benefits, the public will change their minds soon enough.
Hacker News Should be open sourced
I am the only one who thinks that as much as possible Hacker News website source code should be published as an open source?
You make this sound like you are the first person (team?) to do this. I'm thinking the other major ARM fab houses have already figured this out. Or are you the first person to release this outside your company?
This author seems to assume that the TPP is all about trade, ignoring the "Intellectual Property" provisions, and the Investor-State Dispute System section. Given how tightly we've controlled "Intellectual Property" in the USA, I doubt that screwing it down any harder will be generally worthwhile. Might be immensely valuable for copyright-related-industries but actively harm the rest of us.
Really? Next week you can install WSL (Bash on Windows) on Windows 10 which is amazing considering its in beta. Definitely try it if are developing on a Windows box.
It is clear that Apple does consider the desktop dead. As far as the MBPs go, I'm not sure what the hold up is. If they just kept changing out the internals with the latest Intel had to offer people would still complain, but at least be buying recent stuff.

The other option would be to lower prices as the hardware got older, but that is not Apple's way. My 2014 MBP runs fine, I just would not want to pay the new 2016 computer price.
One issue is if you're using Angular. Your html document needs to be xhtml compatible, meaning that an expression like this:

<div ng-if="this() && that()" ...

Needs to become:

<div ng-if="this() &amp;&amp; that()" ...

If this doesn't bother you (along with &gt; for <, etc) then go ahead.
> "Mouse-over" for more info is not meaningful for touchscreens. So icons can't have explanations.

One might argue that the icons should explain themselves.

> Whatever happened to Google's "material design"?

You obviously don't use Android or many of Google's new web sites.
For one, as a company, we're fully focused on our API (whereas Fancy Hands is primarily focused on the consumer assistant product). That means they're less willing and agile to help developers, learn about their use cases, or support them as they scale.

Another large differentiator is FancyHands has often been too expensive to scale with companies as they grow, and aren't focused on building the tooling necessary to make large-scale operations possible.
Twitter Shares Slump on Lower-Than-Expected Revenue Forecast
Obligatory links to Lamport's "How to Write a Proof" [0], and "How to Write a 21st Century Proof."[1] A video presentation of the latter is discussed at [2].

[0] http://research.microsoft.com/en-us/um/people/lamport/pubs/l...

[1] http://research.microsoft.com/en-us/um/people/lamport/pubs/p...

[2] https://news.ycombinator.com/item?id=10689391

[edit: formatting]
Really sad to hear this. I was rooting for them and thought the helmet could save lives, in addition to making it way easier to navigate turn-by-turn on a motorcycle. True, not many would pay $1500 for a motorcycle, but like any other hardware technology, that cost would have come down with scale. I already invested half that in a normal Shoei helmet. I had planned to purchase one to support the product and future scale once they started delivering pre-orders. I hope someone picks up on this idea and starts it again with better investors and culture.
I thought it was. Isn't it called Arc?
Thats part of their business model. I have not used their data but I can tell you that all tick data is not created equally.

We are unlikely to ever see CDS data for free since individuals cannot trade them as most retail investors are not Eligible Contract Participant. Some brokerages give away data to get people to trade with them so there its about customer acquisition.
I don't want to make a strong case for or against any specific skeuomorphist style. I'm just arguing that there's a place for it in modern UIs if done well, and that I don't find it inherently bad to use "extinct objects" as metaphors.
I don't think it was about survival chance. Death by heat sufficient to kill you would surely be extremely painful. Death by fall impact from high enough would at least be quick.
As either option was clearly fatal, jumping wasn't a deliberate choice for death and hence wasn't suicide.
Personally I think that would make some sense. I suspect the catch is in presenting the results to the user: you have to present in 2D, and if you cluster in higher dimensions you may get results that, while perfectly valid, look strange when collapsed to 2D (overlapping/mixed clusters etc.)

To my mind this isn't so bad -- the notion of overlapping clusters is something I think most people actually accept (think of clusters as tags rather than a partitioning and you can get the idea). However I can see why you may prefer to have your clusters present more clearly in 2D.
Show HN: Competitive Crowdfund, Hillary V. Trump for Sky Advertising Over Denver
$42.4 billion of revenue in total. $6 billion of which is services. That is not the profile of a services company. That is the profile of a company who's PR department is running distraction on the press.

You cannot replace the revenue of a once every two years $800 purchase with some music sales. Consummers only even spend that $800 because the cost is hidden in a larger monthly bill.

This should be a big deal. Apple is no longer taking market share from Android. Apple is no longer convincing consumers to replace their old iPhones. This is a trend which should scare investors. Let Apple is still priced assuming 11 more years of current profits.
Top World Under40 Tech Billionaires [Self-Made] That Can Inspire You
> You make this sound like you are the first person (team?) to do this. I'm thinking the other major ARM fab houses have already figured this out. Or are you the first person to release this outside your company?

The author doesn't work at just some ARM fab house... Author works for ARM Ltd.
Functional Patterns – Monoid
Previously: https://hn.algolia.com/?query=%22news.arc%22&sort=byPopulari...
Great to hear young ones getting active, nor just on drunk all the time
Teach Yourself Computer Science
And two more bubbles: long haul trucking and taxis.

Getting rid of drivers is a high priority for that industry. Human drivers are expensive and they can only drive 70 hours a week. [1]

Oh, and Uber is dying to get rid of all its drivers too. [2]

1. https://www.transportation.gov/briefing-room/new-hours-servi...

2. http://sanfrancisco.cbslocal.com/2015/01/27/how-ubers-autono...
Or it's possible we're talking about differing amount of pain or different ways we experience pain.

My back gave out once and for about a week nearly every movement was excruciating. Getting out of bed was a 10 minute ordeal. Trying to sit down on the toilet or stand up was excruciating. Trying to sit down anywhere or lie back down on the a bed sent daggers of pain through my back. Turning in a chair or in the bed was just as bad. If a doctor had said "the rest of your life will be like this" I would have seriously considered ending it.

I've also had bad experience with bungled root canal and a resulting toothache that required 600-800mg of ibuprofen every 2.5 hours for 4 weeks while I waited for an appointment with the dentist to fix it. If the ibuprofen had not worked and had to live with that pain I would have unquestionably ended it.

Had a fingernail pulled out by a doctor once with no pain killers (well, he tried 3 injections of whatever over about 20 minutes but couldn't get the area around the nail to go numb). There's a reason denailing was used as torture. It causes extreme pain.

Whether others experience similar amounts of pain or I'm just a whimp I have no idea but of course I only have my experience to go on and I have a hard time believing if people experienced the same amount of pain every day they could truly live with it.
cDock: http://w0lfschild.github.io/app_cDock.html
I have one. It's excellent.
Not denying your points.

It's not the only way to be a good developer though, that's the idea I hate. It's about teaching yourself to be a good learner, which can be accomplished through a variety of hobbies that don't even need to be tech related. If programming at home is your jam, then more power to you. Saying that any developer who doesn't code on the side is, categorically, "sub-par" is ludicrous though.
The camera portion of Tesla's vision system produces a grayscale image that's then run through some algorithmic pattern detection to figure out what's what in the scene.

Here is an actual dataset [1] of stills from Daimler that's used to train algorithms for pedestrian detection.

The workings of this system are similar to the cameras that are mounted above intersections to detect waiting cars (instead of sensors embedded into the roadway) [2]

[1] http://www.gavrila.net/Datasets/Daimler_Pedestrian_Benchmark...

[2] http://www.modot.org/stlouis/links/signalcameras.htm
I really liked this small article about exponential growth. Exponentials don't really exist in nature, there are pretty much always limits.

http://radar.oreilly.com/2007/11/its-not-exponential-its-sig...
Arc is a language. news.arc is an example program that ships with it. HN is a deployment of that app, with non-open source changes.
Don't drop your phone while trying to use it to steer.

Shattered glass
Depth estimation from cameras is challenging. I've seen recent research in generating depth maps using camera arrays, and even with precision camera calibration and state-of-the-art techniques, there are typically many glaring artifacts in the resulting depth map.

It might be that cameras introduce enough noise and artifacts into the mix that its not worth integrating them at this point.
Of course the terribly irony is that Apple needs the power users because they are the ones who actually create things for their platforms and anything experienced by average users while on a Mac, iPad or iPhone.

But no, the put a "Pro" on the end of the iPad and now we are supposed to believe that is the answer. Sorry, but an iPad will never be a usable workstation without ergonomics, a precision cursor and file system.

Hey, maybe they will release Xcode for Windows or Linux?
VR investment consumers hurdles
>>Are these still labeled as tablets?

At that size, it should be called tables.
If the project is fun I can work two times as long without fatigue. For example if I think this is important and my effort personally can make the difference. Or if I am using a new technology or something that feels like a "portfolio" piece.
I can second using Percona; I wasn't much of a believer in MySQL until I inherited a medium sized application using Percona 5.7. Once you get past a few of the initial warts (like making sure the database doesn't silently truncate your data--yuck), it's been really performant, stable and impressive (and we're running a setup with a fairly complex schema with master operating at ~3000 QPS average, a slave actively replicating for read load balancing and backup, and Sphinx for FTS).

Knowing what to be careful with on MySQL, I would certainly consider using the Percona flavor again in a new application.
Just the built-in apple notes app - starting with El Capitan it has checklists now
Well, yes, they got that right, but I was speaking in terms of not thinking through the engineering in a mission critical design (and in the case of the TMI reactor it had to be approved by the Nuclear Regulatory Commission or whatever its predecessor was). TMI failed in this level of design thinking which would seem fairly obvious (as did NRC in plant design review) scares me in terms of overall engineering thinking. (In other words, if they got that wrong, what else did the designers get wrong).

In the case of Tesla, they have to engineer so that the cars knows about obstacles before crashing into them. The fact that Tesla did not think through this pretty obvious scenario is frightening and suggests a fault in their overall process in engineering. I just feel that Tesla cannot be trusted in terms of engineering unless they have some very smart group check their design.

I doubt BMW would have made such a mistake.
I wonder how much of this downturn is due to not much exciting hardware being release by manufacturers? Intel hasn't released anything much in the last few years, video cards are already overpowered for 99%, phones are pretty much all the same, etc.

Seems like there is no need to upgrade pc hardware or phones these days and VR/IoT hasn't really taken off in any way.
I think in general that selling ongoing services is a good business model, but Apple's bread and butter and golden goose has been hardware. Their enormous cash reserves were built by hardware, not software. Certainly software was a bit part of making that happen, but the margins and money came from hardware.
For example, Chrome disables several JS features and APIs on non-https pages.
Most of the forces driving new money creation doesn't seem to be about new value. The new money created benefits investment schemes for the privileged and to sustain Keynesian policies by the government.

Neither are inherently necessary for a growing economy. And there are other alternative ideas that are reasonable tools to expand the money supply if needed.
Thanks. His or her post history is full of garbage. A shame banning can't do much on free platforms.
Another comparable flood was the 2008 Kosi flood in india[1]. It must be as hard, if not harder, to simulate a river like that because of factors like gradient shifts as the river merges into Ganga and tectonic forces.

[1] https://en.wikipedia.org/wiki/Koshi_River
From the MySQL docs: http://dev.mysql.com/doc/refman/5.7/en/alter-table.html

> Updates and writes to the table that begin after the ALTER TABLE operation begins are stalled until the new table is ready, then are automatically redirected to the new table without any failed updates.

While the master may be technically up for writes during this period, it's not much a goer if your table is large and has any write traffic at all, as anything writing will stall for what may be an extended period.
Well, that might very well be true, but that's what engineering is about, thinking how to make it work.
> swipe conversation left

iOS's heavy reliance on this gesture is a great example of how bad it's gotten. Unlike drawers, which usually have some kind of pullable tab, or reorderable items in a list, which have little icons indicating grabbable-ness, there is no visual cue that items can be swiped left. If you've never used iOS before, you have no way to delete important things unless you've been instructed how to from friends or iPhone-using ancestors.
This is the terminology distinction fmap is noting with "We really don't have a good terminology for distinguishing between efficient constructive proofs (those corresponding to efficient algorithms) and inefficient ones...". The PDF calls the proof non-constructive in that it does not provide an efficient algorithm; however, fmap calls it constructive in that it does provide an inefficient algorithm.
For those who have not entirely automated their fraud ;)
I had that same thought, that the time spent rolling their own system could be better spent just learning some existing good-enough thing.

A great way to get familiar with something is to be the folks who write it. It's also much more fun to design and implement something new than to just learn some other fella's software. I'm guilty of this myself.

But I've started to remind myself that "somebody else has had this problem" and there's probably a good enough solution out there already.

Put another way, is what you are trying to do really so novel? In the case of Uber's infrastructure, you would have to talk for awhile to convince me that they really really need something not-off-the-shelf.
>> Since the introduction of the multicolor iMac, Apple has >> been moving steadily towards a line of luxury-ish mass market products.

That would've been twenty years ago. The only "interesting" boxes that appeared before then were the Mac II NuBus machines, and even then because there was no alternative.

History at that time moved very slowly - it allowed for an Apple II class machine to be sold into the 1990s; after that, the benefit of a tightly designed custom motherboard and software combination trailed dramatically against the cost of supporting software. Sure, a DayStar 40MHz accelerator card was the bees knees at only only like $1,040, but it didn't do anything even remotely like moving the software forward like the (2004) intel transition. (And compatibility was severely lacking from third parties for third party pro options.)

(Please do note though, I <3 m68k. I wish the world had taken another track - but I don't think i'd have been significantly better off.)
Have you been living under a rock?
You'd probably have to make them, or get a colleague to.

Reading over this study, http://www.cell.com/cell-stem-cell/fulltext/S1934-5909(13)00... and some of its citations it's within the means of a 3 person team.