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olympus

2,099 karma · joined June 25, 2012

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olympus··on FCC Authorizes SpaceX to Provide Broadband Satellite Services
I'm doing it (mobile internet, not van life). The conversations on RV forums deal with stuff like unlimited data in the middle of Wyoming for less money, or how to get a SIM card and plan from a connected car device that AT&T discontinued because RVers were using for other than it's intended purpose.

What the RVers are too cheap to do is pay for the product they want. Go to unlimitedville.com, pay $200 a month, and you have unlimited LTE in every city you travel to. If you want the best mobile internet you have to pay for it.

olympus··on Qatar's F-15s Will Feature New 'Low Profile' Heads Up Display and New Cockpit
Gulf Cooperation Council for those that don't know. It's a regional alliance of countries around Saudi Arabia. Their major interests are 1. making tons of money, and 2. defending against Iran.
olympus··on FCC Authorizes SpaceX to Provide Broadband Satellite Services
Satellite is worse, so if you can't get it done with 4G you won't be doing it with satellite.
olympus··on Qatar's F-15s Will Feature New 'Low Profile' Heads Up Display and New Cockpit
Moot point, because a fighter pilot will never say "head." That and the word "box" are strictly prohibited.
olympus··on Qatar's F-15s Will Feature New 'Low Profile' Heads Up Display and New Cockpit
It's not really a startup idea, it's just a bad choice that was made when equipping the plane (often the manufacturer's choice, not the purchaser's). Button and dial based options exist for every instrument and piece of avionics, even modern systems. The person making the equipment selection just fell victim to slick advertising photos instead of practicality, or got conned into buying a Lynx because they thought they were getting some sort of deal.
olympus··on Qatar's F-15s Will Feature New 'Low Profile' Heads Up Display and New Cockpit
Private pilot and military officer here (but not military pilot). On the military side, touchscreens suck horribly but are already being crammed into planes where soft buttons on the side of a display and controls on throttle and stick are already solutions that work fine. F-15s also have (depending on country) head tracking in the form of HMCS, so doing a gaze based interface is feasible and a better solution than touchscreens.

Honestly, page-based systems that can be accessed with a castle/boat switch is fine for modern fighters and trained pilots. Hearing a trained Eagle driver rattle off how to get to a specific menu/page from any other page is pretty impressive- "You need to change missile mode but you're on the ECS page? Back, down, down, right, right. [or something like that]" And they aren't even sitting in the plane or looking at the screens, it's just muscle memory.

Non-military specific, and the biggest con of touchscreens in a cockpit: - Turbulence makes it hard to hit the right places on the touchscreen. Traditionally you'd rest your hand or stabilize a few fingers on the outside of your radio/navigator before twirling the dials or pushing buttons, and there was enough resistance to keep from accidental presses. With stuff like the GTN 650 pushing the screen out to the edges, resting your hand on the bezel means you accidentally make touches to the edge of the screen. Competitors like Avidyne actually market old school buttons as a feature, and it's a compelling one.

Military specific concerns: - Wearing gloves while flying means that button size needs to be huge and touchscreens aren't very precise. - High-G maneuvers make it really hard to touch the right part of the screen.

olympus··on FCC Authorizes SpaceX to Provide Broadband Satellite Services
You can get decent 4G internet plans already in most parts of the world. While this will have better coverage of rural areas, mobile internet is very adequate for the van lifestyle.
olympus··on Dear Mark Zuckerberg (2012)
Yes it was. The options were to pay money for a lower populated platform (App.net), vs a higher-populated platform for free. The only benefit was that App.net claimed it was going to be nicer with your data. Everything else was worse. App.net couldn't compete against Twitter with only one pro and several cons. It's only hope was to survive long enough until Twitter's investors got tired of sinking money into it and pulled the plug. Unfortunately for App.net Twitter managed to turn a profit.
olympus··on Statement by FTC Regarding Reported Concerns about Facebook Privacy Practices
Right, but that is only if they discriminate based on what they had recorded about you. A company recording whether they think you are gay based on your location information isn't doing anything illegal until they discriminate against you with that information. There are things that a company can do (like advertising) that doesn't meet the bar of discrimination that they can still legally do with their inference about your sexual preference (or whatever else they infer about you from your data).

Advertising "gay" products to you based on the fact that your cell phone spends a lot of time in close proximity to a gay bar probably doesn't meet the bar for a discrimination lawsuit.

olympus··on Statement by FTC Regarding Reported Concerns about Facebook Privacy Practices
https://en.wikipedia.org/wiki/LGBT_rights_in_Russia#National...

"Under the statute it is effectively illegal to perform any of the following in the presence of minors: hold gay pride events, speak in favor of gay rights, or say that gay relationships are equal to heterosexual relationships"

"The law subjects Russian citizens found guilty to fines of up to 5,000 rubles and public officials to fines of up to 50,000 rubles."

olympus··on Statement by FTC Regarding Reported Concerns about Facebook Privacy Practices
It's not illegal to record whether you think someone is gay. It's probably immoral if you hand that data over to a country that will prosecute someone for being gay (Russia).

I'm not aware of any US protections unless they came along with recently passed legislation, but the GDPR had some recourse for European citizens. They are now guaranteed a right to explanation and a right to correct the data. So if a person is given a higher health insurance premium, they are allowed to ask for an explanation. If the answer is "Google thinks you're gay, so we're raising your premium," the person is allowed to correct the information, basically saying, "I'm not gay, so please lower my premiums to what they were."

olympus··on Amazon's internal numbers on Prime Video, revealed
Not surprising that The Grand Tour and The Man in the High Castle are the top two. The Grand Tour is basically just Top Gear, which was one of the most popular shows in the world when it was on, and The Man in the High Castle is pretty unique in terms of the story for a top production budget show. The rest of Amazon's lineup can be described in terms of other shows, like Bosch is a standard cop/detective show with a gritty main character. This shows that Amazon needs to focus on truly original content and not rehash the same old ideas that have been done a dozen times before. All their big winners are unique.
olympus··on Self-driving Uber car kills Arizona woman crossing street
Video says bicyclist, written article says pedestrian. Video says they don't know if a person was behind the wheel, written article says there was a person behind the wheel.

There's enough discrepancy here that I'm not sure what happened until we see the onboard data (unlikely to be released to the public) or a statement from a trusted public official like the Tempe police chief.

olympus··on Self-driving Uber car kills Arizona woman crossing street
Could a human have reacted fast enough to stop for someone jumping out in front of them? If the person jumped out so fast that nobody could have possibly reacted in time, then it's not a stain on the technology- even with an instantaneous application of brakes, a car still takes a while to come to a stop. If the human jumped out ten seconds earlier and was waving her hands for help, then it's an issue.

"the whole point of self-driving cars is that they can react to unexpected circumstances much more quickly than a human"

This statement isn't really true. Do you think Uber is investing in this because it makes their passengers safer? No, they are pretty much immune to any car crashes with a human driver, the risk and insurance hit is assumed by the driver. They are doing this to save money. They don't have to pay a driver for each trip. The safety aspect is just a perk, but Uber will be pushing this full force as long as the self-driving cars are good enough.

I'm more concerned that Uber will "lose" the video evidence showing what kind of situation it was, and we'll never be able to know if a human would have had ample time to react.

olympus··on #deletefacebook
This is somewhat true. However, if you stop adding data to your profile it becomes stale. Since I deleted my facebook profile I moved cities, bought a house, a different car, and have new friends in real life. My old FB profile is probably still a good indicator of which way I'd vote in an election, but it's useless now for targeted advertising. The only way to make that break is to delete your profile now; slowly over time your real life will start to change and eventually won't resemble the digital you at all.
olympus··on Will GDPR Make Machine Learning Illegal?
My point is that just saying "we have data X,Y,Z" for a person doesn't explain the logic. It allows you to check that the input data is correct, but you don't understand the decision from it. What you need is an explanation saying something like "X is too low, and we think that Y in the presence of Z is a significant risk factor."

The need for the explanation is because an AI can learn to discriminate against protected classes even if they aren't explicitly part of the dataset. You might not have included race in the inputs, but you did include their name, and it figures out that people named "Jakub" should be declined for a loan. The AI can't say that it's because they are Polish, but it learned to discriminate against Polish sounding names because of all the racism in the training data. We could uncover that if the AI was able to explain that it denied the loan mostly because of the name, and that the other pieces Y and Z did not factor into the decision as heavily. Just saying X Y and Z doesn't help us figure out which of those pieces are the important parts for denying a loan.

olympus··on Will GDPR Make Machine Learning Illegal?
Expand that a bit:

"Articles 13-15 provide rights to 'meaningful information about the logic involved' in automated decisions."

Your scenario doesn't explain the logic. Saying "that's the AI's choice and we're going with it because it's 99.9% accurate" isn't the logic involved in the decision.

You need an interpretable model to ensure that the AI isn't discriminating based on a protected class (race/gender/etc). "You were denied a loan because the AI determined that you're Polish, and we don't like Polish people" is partly what this law wants to prevent.

Forcing models to be explainable makes sure that we aren't illegally discriminating, so we need to make sure that we can tell why the AI made it's choice, not just what the choice was.

olympus··on To find suspects, police quietly turn to Google
Does it guarantee to do this for everyone or just Europeans? Genuinely curious here since they might have separate policies in place for different countries- I imagine that China prefers to keep all its citizens' emails indefinitely.
olympus··on To find suspects, police quietly turn to Google
Don't act all snarky when someone says the only way not to be tracked is to not carry a phone. It's pretty close to being true, and you don't know if hitting the software switch to turn off your GPS really turns it off or if it goes into a low power mode where it only updates your position every five minutes- this is not unheard of to keep the time to fix low for when a person turns location services back on.

As mentioned in the article, Google was previously caught tracking people even when they had location, data, and Wi-Fi turned off. We just have to take their word now that they don't do it anymore, and the word of a big profit driven corporation that has been implicated in PRISM and previously tracked people isn't worth too much.

Furthermore, even if Google doesn't track you the cell phone companies still know which tower your cell phone was connected to, so they know your location within three miles at all times. It's not as precise as GPS info, but the police could still ask the cell phone companies to give them a list of phone accounts that were visible to a specific set of cell phone towers at a particular set of times.

olympus··on Breaking a Wine Glass in Python by Detecting the Resonant Frequency
It starts out arbitrary but becomes useful once everyone agrees with it, like measuring distance in meters- which has gone through several definitions, none of which make much sense in terms of being based on a natural constant and using a nice round numbers as a coefficient.

If four instruments are following the standard and one is a bit flat because "A-440 Hz is arbitrary" then the whole band sounds like a mess.

olympus··on You need 16 times the sample size to estimate an interaction than a main effect
Interactions are usually smaller than main effects, the idea that they are half the size is just a convenient size to get a point across. If you allowed the interaction size to vary between 1% to 99% of the main effect then you'd get such a huge range of resulting required sample sizes that it wouldn't be useful to illustrate his point- that interactions require a larger sample size to estimate than just tacking on another main effect. If you wanted to detect a main effect that is half the size of the others you only need (roughly) 4x the sample size, not 16x. Part of this is due to the way Gelman defines "interactions half the size of the main effects" but the idea that interactions are harder to estimate than main effects is true.

The assumption that interactions are smaller than main effects is generally true in real life. There's an idea in statistical modeling called the hierarchy of effects. Main effects are the largest while second-level effects are smaller and don't appear without the presence of the corresponding main effects. It's possible to construct datasets in which the hierarchy of effects isn't true (synergy only, without any benefit from a single variable), but it's uncommon in real life that you could have an interaction without both corresponding main effects being present.

olympus··on Fountain pen inks: the good, the bad, and the ugly (2011)
They won't force you to use a particular pen, but they must take reasonable precautions that you are using permanent ink. Notaries must protect their seal, and don't want you to sign as Joe Blow, get the seal, then wash the signature off at home and re-sign as Donald Trump. Washing a signature is trivial with many FP inks, so most notaries don't want you to use them- it's too much trouble to verify which inks are safe, and much easier to ask you to use a ballpoint. Those that do allow it are risking losing their license (admittedly a small risk) if they get caught up in fraudulent signatures.

Notaries that allow FP inks are either just accepting the risk because they don't want to be a dick or they are not aware that by using FP ink you might as well be signing in pencil.

olympus··on Fountain pen inks: the good, the bad, and the ugly (2011)
Massdrop does pretty well in the "stuff I only needed one of but ended up chasing a dragon" categories:

- Everyday carry tools/pocket knives - Mechanical keyboards - Headphones - Pens/pencils

There seems to be a common type of person that wants to have different stuff than the mainstream, and they all start by buying Benchmade knives, Ducky keyboards, Grado headphones, and a Lamy Safari.

olympus··on Fountain pen inks: the good, the bad, and the ugly (2011)
It is the most ill-behaved fountain pen ink there is but it's also the most permanent (which is why Noodler's still makes it and people still buy it). You need a pretty strong bleach solution to get the staining out of anything. Water, ammonia, and other standard ink cleaners won't touch it.
olympus··on Fountain pen inks: the good, the bad, and the ugly (2011)
The person that told you this is full of hogwash. Being signed with the same ink provides no evidence that two people were together at the same time (unless the ink is extremely rare and hard to procure), and you cannot tell if two signatures were done with the exact same pen. Two people can sign with the same model of pen within days of each other and you can't tell the difference after a few days- and most legal disputes are going to occur more than a few days after signing. Being signed with two different pens also doesn't suggest anything other than the two signatories used different pens.

If you want legally admissible proof that two people signed a document together then you need a notary. Of course a notary could be corrupted, but the courts are much less concerned about that than they are about the chance that two people both own a Pilot G2 in black.

olympus··on Fountain pen inks: the good, the bad, and the ugly (2011)
In the US most notaries will not allow you to sign official documents with a fountain pen- it seems to be part of the training, and many realtors and attorneys are notaries for convenience. As great as they are to write with, many FP inks cannot withstand tampering, so they don't allow any FP inks because it's hard to track which of the thousands of brand/color combos are safe. A cheapo ballpoint is better for official documents- although in this era I'd trust a cryptographic signature more than a handwritten one.
olympus··on FCC Accuses Stealthy Startup of Launching Rogue Satellites
I would argue that their actions indicate they don't have the experience they would like people to believe- not that I blame them for that part, every founder should try to make themselves look better to investors. They could be padding their resume or even outright lying, but anyone who says "it's no big deal if our license got denied, we'll launch without addressing any of the issues and try to work it out later" is not an industry veteran. Trying to keep to a timeline by going around the established process isn't what professionals do. Even Elon Musk plays ball with government regulators while pushing his ideas.

Edit: the article describes them as an engineer that developed a satellite concept for Google and the other sold his previous company to Apple. Neither of them have experience in this regulatory environment. Neither Google nor Apple are space companies. These founders are going in on the tech aspect of distributed computing in space, I doubt either has launched a satellite before.

olympus··on FCC Accuses Stealthy Startup of Launching Rogue Satellites
The NRO launches them and hands OPCON over to the NSA.
olympus··on FCC Accuses Stealthy Startup of Launching Rogue Satellites
It's still a categorical "not" as far as international law goes. There are no competing treaties that other countries have signed with different interpretations of the fair use of space. Just because China (and the US, as other replies have pointed out) has broken the rules doesn't change the fact that they are still the rules. A satellite that is behaving itself is one that isn't violating the OST- generally that means not interfering with other satellites and their missions and not carrying nuclear weapons.

62 miles (100 km) altitude is where the border lies.

This is not a gray area at all and there is no money to be made by violating the OST. If you start a company in a country that has signed the OST you will be held to the rules. Any country that isn't a signatory to the OST doesn't have a robust space program and will likely still require you to follow the OST because there will be strong international pressure on them. Even if a country did allow you to violate the OST you wouldn't have a viable business because all the economically developed countries of the world have signed the OST and won't do business with someone that is interfering with their access to space.

olympus··on FCC Accuses Stealthy Startup of Launching Rogue Satellites
It's possible that they have nobody on their team with any government experience nor space experience. This is a fairly common way that startups fail, they think they have a great idea but are unfamiliar with the regulatory environment they must operate in (banking and medical startups are particularly vulnerable). Consider that a cubesat launch costs about $40k, add in $10k for the satellite cost, you're looking at just $200k to launch these satellites. Add in a spare system or three, multiply by a generous margin of error, and you're still under half a million bucks. That's basically the same as hiring a couple employees. To further realize that they could be doing this on the cheap, these are apparently 0.25U sized cubesats, which are even cheaper to launch than the "standard" 1U size: http://space.skyrocket.de/doc_sdat/spacebee.htm

They don't necessarily need to be a huge team with a bunch of experienced industry insiders to pull this off. They could just as easily be a couple of recent grads with some of Grandma's inheritance from selling her house in Palo Alto.

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