HNHacker News
TopNewBestAskShowJobs

Cass

1,048 karma · joined December 2, 2011

submissionscomments
Cass··on Apple Gears Up to Challenge Tesla in Electric Cars
<em>Animals and children running out last-second into the road?</em>

I feel like AI would outperform the heck out of us in that situation, because solving it correctly involves a) high situational awareness, which we suck at because we get distracted, and b) making split-second calculations, which we suck at because we panic and our reflexes aren't that fast. I mean, this is a simple situation, when it comes down to it:

Something runs out into the road.

- Can you swerve and avoid hitting it without hitting anything else or driving off the road? If yes, do. If no:

- Can you hit the brakes without endangering anyone behind you? (Humans tend to have trouble with this decision, because half the time we forget to watch the rear view mirror and now there's no time to check. An AI would ALWAYS know what was behind it.) If yes, do. If not:

Are you more worried about endangering the thing before you or the thing behind you? If it's an animal, hit the animal. If the thing in front of you is a squishy human and the thing behind you is a car protected by all the engineering that protects cars in crashes these days, hit the brakes.

That's all there is to it, 99 % of the time. Sure, this is a situation where AI might make the wrong decision in 1 % of cases, but it's also a situation where humans are wrong much more than that.

<em>How do you deal with a lack of markers on the road?</em>

This one is actually probably most easily solved by just putting markers on all roads. Sure, that would require driving down all roads in a specially-engineered expensive vehicle with a dedicated crew, so you think it sounds like unaffordable insanity until you realize google has already done it once, for the googlemaps mapping project. Just do it again, this time in a car made for spray-painting markers instead of mapping stuff.

Apart from that, the overwhelming majority of problems on the road can be solved by yielding even when you're technically in the right and just slowing the heck down, if necessary to walking speed and below. There will still be problems that only a human being can solve, but there's going to be a human being in the car, so worst case, pull over and ask them. If your human is drunk or underage, pull over, wait for the next passing car, watch how their human solves it, and do what they did. In the rare case where there's no other car likely to pass any time soon and the human in the car is incapacitated - possibly some sort of remote solution would work, where a human in some kind of remote driving center can take control of your car for a minute if necessary?

There'll still be high-speed situations where the AI will fuck and kill someone, but I do think people would come to accept self-driving AI even if it occasionally fucks up and kills people, because it'll be world-changingly convenient. And so far we've accepted a LOT of occasionally-deadly shit if it's sufficiently convenient. (Trains. planes. Nuclear reactors. Every single one of those things had waves of protests and people going "It will never work, and when it fails, people will die! Not worth it!"

And occasionally they failed, and people died, but we still keep using them.

Cass··on Kalzumeus Software Year in Review 2014
Not Patrick, but I could see at least two good ways to scale this:

- Make it a selling point for the higher tiers of accounts. "If you choose the Serious Business plan, all your questions will be answered by our lead engineer. (Your Serious Business is too important to trust to a call center.)"

If you want to keep the selling point of competent and personal support for all customers:

All questions are answered directly by our highly-trained customer support reps, Anna and Thomas [Picture of Anna and Thomas smiling winningly and looking nothing like That Anonymous Incompetent Dick I Get Every Time I Call The Phone Company.] In the rare cases where they can't solve your problem, they'll immediately refer you to our lead engineer."

Cass··on Google is developing cancer and heart attack detector
Are you sure it's CT scans? Why not MRIs, which as far as we know cause much less harm to the body? (They're more expensive, but I'd think people who are that worried about cancer would consider the extra expense worth it.)
Cass··on National Nurse Survey Shows Hospitals Still Not Prepared for U.S. Ebola Patients
Germany's not doing any better. My hospital's Ebola preparedness plan: Someone printed out a piece of paper with the number of the Ebola advice hotline, underlined it in orange, and stuck it up on the Emergency Room wall.

I'm reasonably sure we don't have fluid impermeable gowns AT ALL, and while we do have face shields in an operating room somewhere, I wouldn't want to have to find one in a hurry.

(That said, I'm reasonably sure that our actual inofficially-official Ebola plan is "Shut Door behind patient. Yell at people on Ebola hotline until they agree to come and take the patient away to a hospital more prepared to deal with this.")

Cass··on I Had a Stroke at 33
A smartwatch with a pulse sensor could easily detect an arrhythmic pulse, which can be a symptom of atrial fibrillation, one of the most common causes of strokes. You couldn't diagnose a stroke itself just from heart rate and blood pressure, though. There's way too many other factors that can cause variations in those.
Cass··on Vision-Correcting Displays [video]
If someone's far-sighted, as many people above the age of forty are, they might be able to see the street perfectly well, but have trouble reading a GPS screen that's only fourty cm away from their face.

And speaking as one of the people whose vision defect can't be corrected by glasses, but only by uncomfortable contact lenses, there'd be immense value to me in a computer I can use without lenses - especially since reading on a screen is basically the only thing I need the damn things for while I'm at home. For someone whose work is mostly computer-based, you might be able to get away with taking your lenses out for the entire day and only wear them for the drive to work and back.

Cass··on Second-Chance Med School
In countries where it's more socially accepted for doctors to work part time, and where half a doctor's salary is a livable wage (i.e. you don't have to pay off half a million dollars of student loans), a ton of doctors do, especially women who want to stay home with their kids. Hell, here in Germany I know a lot of residents who are happy to take half their €48.000 for half the work hours. (I don't envy American doctor working hours, but I sure do envy their salary.)
Cass··on Trillions of plastic pieces found in Arctic ice
From a human habitability point of view, Mars is fucked worse than the worst thing we could possibly do to Earth (short of accidentally blowing it into an asteroid cloud.) It doesn't even have (enough) water or (the right kind of) atmosphere or gravity! It's a rock in space. Terraforming Mars, or any planet we can currently reach without faster-than-light flight, would require an immense leap in technology, including technologies we're currently not even studying. We'd have to build a whole new planet from basically scratch.

On the other hand, we could go quite a long way towards fixing the perfectly good planet we already live on with technologies we already have. Hell, I suspect we could get 90 % of the way there with a century of strict population control and putting the same effort into reducing pollution and emissions we currently put into developing more profitable technologies. We're mostly not dumping our waste in the oceans and the atmosphere because we have no other choice, but because it's cheap and convenient and because humanity as a whole has other priorities than the preservation of the planet.

Cass··on Brain zap rouses people from years of vegetative state
It's not exactly cruel, but it's also not exactly the most pleasant way to die. We recently pulled a patient's feeding tube (in accordance with her own wishes - she had terminal cancer, and had been able to see the end coming for a while), and it took her a full freaking eighteen days to die on no sustenance but a single cup of water someone gave her on day six. We obviously had the poor woman on a morphine pump the whole time, so she was too out of it most of the time to suffer much, but it's not a perfect system - she kept having moments where she'd become more awake and agitated, and I did feel like she was experiencing some suffering in those moments during our best efforts.

Coincidentally at the same time, I had to have my cat put to sleep. The vet came to my house, he received a single injection, and then he peacefully fell asleep in my arms without so much as a twitch. The entire process took not five minutes altogether. I know which way of dying I'd prefer, if it was my terminally ill body at stake.

Cass··on Bizarre Shadowy Paper-Based Payment System Being Rolled Out Worldwide
What are those safer, equally effective alternatives? Ibuprofen causes gastric ulcers, Diclofenac does too, Aspirin is an anticoagulant, and Metamizole can cause agranulocytosis. Also, the maximum recommended daily dose for Acetaminophen is somewhere around 3500 mg, which is seven extra strength Tylenol - hardly what I'd call a narrow therapeutic index.
Cass··on Patrick McKenzie AMA on BetaList
You mentioned in one of the comments that you get a lot of business from referrals, but don't track the number of referrals in any way. Would it make sense to have some sort of rewards program, e.g. one month off for every customer someone refers to you? I don't expect that would do much for you in the (presumably most lucrative) enterprise space, so maybe it's not something that would make sense to spend time implementing, but I could imagine it working out quite well with e.g. owners of massage parlors.
Cass··on Genetics prof: Why I won’t waste my money on a DNA test in 2014
look at what this drug did to my grandma

And this is exactly the sort of crazy nonsense that happens when you give medical information to laypeople without explaining it properly. Warfarin doesn't cause strokes, or if it does, it does so as a crazy and crazy unlikely side-effect in a vanishingly small number of patients. The common, dangerous, life-threatening side effect of Warfarin, the one you need to be worried about with a Warfarin sensitivity, is bleeding. Of course, Warfarin, when administed in a careful, low dosage to people with the sensitivity, may fail to prevent a stroke, but Warfarin almost certainly did not give the previous commenter's grandma a stroke, and it's driving me slightly crazy that this thread is causing people to think that it's some sort of common side effect.

Cass··on Genetics prof: Why I won’t waste my money on a DNA test in 2014
This comment is the perfect example of why the FDA needs to be involved with this. They gave you very important medical information. Did they a) make sure the information was accurate and b) explain it to you in a way that's understandable to a layperson?

I can easily see a layperson reading that, and thinking "warfarin sensitivity"? As in "food sensitivity", meaning "this is something that isn't good for me, and I should avoid it?" Wait, isn't that the stuff that gave my grandmother a stroke? Holy shit, they killed my grandmother by giving her too much of a medicine that she's sensitive to!"

All warfarin sensitivity actually means, though, as far as I understand it, is that you're likely to need a lower dose than the average patient. If your grandmother had a stroke, it's unlikely that she was overdosed, though - in fact, it's quite likely that she received too low a dose.

If someone has a stroke under warfarin treatment, there are two likely causes: Either their warfarin dose was too low, or they had an artery-to-artery embolic stroke instead of the cardioembolic stroke the warfarin was supposed to prevent. (There are of course other, more rare cases of stroke, but those are the two big ones.)

Do you see how there's a huge potential for misunderstandings here? I'm not saying you suffered this particular misunderstanding, or that laypeople should be stopped from getting this information. I'm just saying, if you're going to put something like that out there and claim it's a diagnostic tool, it needs to be accurate and it needs to be explained, and that's where the FDA needs to come in.

Cass··on Valproate reopens critical-period learning of absolute pitch
If this drug improves your ability to perceive subtle differences in sound the way children can, I wonder if this could also facilitate learning a language with native-speaker pronunciation? As a German who still can't quite get the "th" sound right after a decade of speaking English fluently and is currently struggling badly with the Arabic غ, I'd find that rather more useful that absolute pitch.
Cass··on Ask HN: What's the best place in Europe to live and work cheaply?
While Munich is in fact hellishly expensive, the Bavarian version of "right wing" is VERY different from what most Americans would probably expect when reading that phrase. (My general expression of the American right wing, particularly in the southern US states, as a German, is that it tends to be partly centered around opposition to issues such as gay rights, abortion, and free healthcare, which the average person from Munich tends to have very liberal views on, in my personal experience.) And my friends from other countries have uniformly told me that they've felt very welcome in Munich - there's a very high rate of people who speak English here, for one, more so than in more rural areas or some of the eastern states.

It's not a perfect city, of course, but I'd highly recommend it to any foreigner who's willing to put up with the prices.

Cass··on Robots vs. Anesthesiologists
It's quite common here in Germany. I know several doctors who routinely do it without anesthesia, to avoid the dangers of sedation. Having seen a colonoscopy done that way a few times, I'd personally insist on sedation. Most people I've personally observed who were awake for the procedure seemed to find it almost unbearably painful, although there was a minority who didn't mind it much.
Cass··on Germany Fights Population Drop
They actually created a new residency law designed to make immigration to Germany easier for skilled employees just a year ago. Google "blue card". It hasn't had the success they were hoping for, but they're trying.
Cass··on How to build a procedural city in WebGL
I also really liked Shamus's Project Frontier, a detailed walkthrough on generating an entire procedural world. http://www.shamusyoung.com/twentysidedtale/?p=11874

He released the executable at the end of the series, and I'm still sad that, as a non-programmer, I couldn't get it to run on my computer. I would have loved to have a chance to explore the world. Some of his screencaps are mindblowing.

[ETA: Since it's not immediately obvious how to get there from the rest of the articles on Project Frontier, here's the link to the source code: http://www.shamusyoung.com/twentysidedtale/?p=15808]

Cass··on Monday was my 46th birthday and likely my last
But consider this: what value is there in reviving the dead and frozen rather than preserving the living?

There'd be lots of value in being able to revive people who died a long time ago, if only for their value as contemporary witnesses. Hell, a few years ago the scientific community went pretty crazy for some frozen dude we found in Austria, and that one was thoroughly dead. [1]

We already don't have anyone left who remembers the First World War. In a few years, we'll lose the last Holocaust survivor. Wouldn't it be nice to be able to preserve some of that first-hand experience? And come on, how cool would it be to be able to unfreeze an Ancient Egyptian, or a bunch of people from the Middle Ages?

I agree that the future probably won't have a use for a whole horde of our living dead, but I can see there being quite a bit of interest in reviving a few hundred or thousand people - and once you've gone to all the trouble to develop the technology, maybe it'll be cheap enough to go to the trouble of unfreezing everyone else.

1: http://en.wikipedia.org/wiki/%C3%96tzi

Cass··on Germans accuse U.S. of Stasi tactics before Obama visit
There's nothing surprising about the German tolerance of the US military bases, considering that they do nothing whatsoever to interfere with our lives or inconvenience us in any way, but do provide quite a lot of jobs. These are mostly medical or training facilities, many of them operated jointly by American and German forces, not some occupying force that's intent on overrunning our government or controlling the citizenry.

As far as public opinion goes, this is a complete non-issue, and I strongly suspect that if public opinion turned so far as to make it an issue, the US would withdraw their troops before entering into a war with a powerful western nation that would almost inevitably turn into another world war. This is really not what I'd call an occupation.

Cass··on Selling Your Software To Businesses - TwilioCon 2012 presentation
Finished studying as of November last year, actually. And sure, send me an email, cassandrexx on gmail.
Cass··on Selling Your Software To Businesses - TwilioCon 2012 presentation
Or copy an existing business and apply it to the same industry in a different country. No reason, say, Appointment Reminder wouldn't work just as well in Germany.
Cass··on Selling Your Software To Businesses - TwilioCon 2012 presentation
You'd probably do better to target businesses than consumers. Sure, you don't want to call the pharmacy, but how much are you really willing to pay to save yourself one phone call once a month? (Beware, if you're a highly paid and highly antisocial HN user, your response to this is probably going to be "a lot more than the average customer".) Same problem for the restaurant call.

On the other hand, how much would your pharmacist be willing to pay to save his highly paid staff the four hours they spend on the phone every month reminding customers that the prescription they've ordered has been in for a week now? Find a way to solve problems for businesses, not consumers.

I suspect automated collection calls are illegal, or otherwise already exist, but if they're not and they don't, that sounds like a way to make absolute piles of cash from collection agencies (in a slightly ethically dodgy way).

Cass··on Actually eat healthily for £1 per day
Seed packets are $0.10 at The Dollar Store this time of year.

Yeah, that's a really easy mistake to make. Happened to me too, last year. "Zuchini seeds ten plants for ten cents? I'm going to save SO MUCH MONEY!" I thought. Then I realized: A box big enough to grow a single zucchini plant in: €7. Yep, big planters are crazy expensive. Enough soil to grow a healthy zucchini plant: €5. Yep, you do need the entire bag if you want actual fruits instead of a pretty but useless flower.

Time to drive to the garden market, buy planters, plant them, and water the plants: Maybe two hours altogether.

So now you're at €12,10 for, IDK, maybe a dozen zucchini over the season. Not really a steal, but hey, organic food! Still worth it, right?

Then my zucchini got bugs and died. €12,10 and two hours of effort wasted.

"Yep, that happens when you grow vegetables inside. Should have put them on the balcony", my gardener friends said, nodding wisely. Know many poor people with nice big south-facing balconies?

I've in the past also failed miserably at sunflowers, and let's not even talk about the slow miserable death of my tragic attempt at salad. Now, I keep trying to grow food because I have the time and money to waste, and a shed to store all those big planters in during the winter. But if I were trying to cheaply feed my family, this sure as hell isn't a hobby I could afford.

Cass··on If this were a pill, you’d do anything to get it
How many doctors actually stand to gain by mistreating patients, though? I don't know about the USA, but in my country, most medical care is provided by salaried doctors who are paid the same regardless of the hospital's profit margin.

Now, obviously we do want the hospital to be profitable enough that they don't start firing us, but there's certainly no immediate benefit along the lines of "Well, I don't this guy to get an infection, but I'd make an extra $ 1000 if he did," which I agree would certainly provide skewed incentives. The only thing that happens when my patients get complications is I get to pull more unpaid overtime.

Cass··on If this were a pill, you’d do anything to get it
You have 4.5 hours to treat someone for a stroke if they teleport to the hospital the second they notice the first symptom. In real life, you often have an hour or four where the patients wait for their weird symptoms to go away again because they don't want to overreact and bother some busy doctor who should be taking care of Serious Emergencies, and then another half hour to get them to the ER, and then you're lucky if they're still in the treatment window at all by the time a doctor sees them.

There's not a lot of running down halls in screaming in real ERs, but there's also no time to, for example, send someone to go home and get the ID the patient forgot in their panic and hurry, to prove they're not blacklisted "no medical treatment" somewhere.

Cass··on Tesla Unveils New Finance Product
We do have a lot fewer SUVs and other gas guzzlers, though.
Cass··on Dear brilliant students: Please consider not doing a PhD.
There's a few people in the comment section talking about how doing their PhD as a mature student worked far better for them and left them with their soul only lightly crushed, so you might be able to ask for some advice over there.
Cass··on Google Glass to Hit Developers' Hands This Month
If it turns out that it's actually possible to comfortable read information on these, which I find extremely hard to imagine, they would also be immensely helpful in the Emergency Room and the hospital, especially with facial recognition software. Being able to instantly see lab results/x-rays/patient data for any patient you're looking at, and being able to instantly look up things you don't know without having to lug around a stack of files or having to keep going back to the computer would save an incredible amount of time, and make it so much easier not to overlook critical information.

That said, the privacy implications are horrifying.

Cass··on I want the world to scroll this way
I don't find it the least bit hard to read on the web, and traditional scrolling has never interfered with my reading pleasure, but I'm pretty excited about the fact that if I can get the scroll speed right on this thing, I can probably use this to read in bed on cold winter mornings without ever having to move a hand out from under my warm blankets to hit the pagedown key.

(I know I could use automatic scrolling for the same purpose, but I don't like it when the text is constantly moving.)

← PreviousPage 3 of 5Next →