Forgot your password?
typodupeerror

Comment: Re:Maul (Score 1) 214

by epine (#46811867) Attached to: Reinventing the Axe

Yea, this inverter isn't very bright and violates the first rule of splitting with an axe (after wearing steal toed boots), don't let go of the axe handle during your swing.

No, the first rule of using an axe is to either use an axe with a long handle, or a hatchet, but never anything in between.

I'm not much worried about my toes wielding a long-handled axe, but I am worried about more distal objects (and people) in the plane of the swinging motion. Medium-handled axes are for crazy people who never much liked walking around in the first place, or who get an unbearable itch to perform a District 9 pedicure.

Comment: Re:They don't pay attention to Coverity (Score 1) 374

by epine (#46800499) Attached to: OpenSSL Cleanup: Hundreds of Commits In a Week

You'll kick yourself later if you hit a bug that was revealed by a warning which was ignored.

Yes, it's called highsight bias, and there's an entire subfield of psychology devoted to its study, and a related subfield of behavioural economics which applies cost/benefit analysis to the human self-kick behavioural reflex arc.

There are educated self-kicks and there are also blind mice self-kicks.

Comment: how about this random pin? (Score 1) 1037

by epine (#46679625) Attached to: How the Internet Is Taking Away America's Religion

If we're randomly sticking pins into phrenological mutuality, how about this one? (my personal favourite):

Catholic sex abuse cases:

In 1994, allegations of sexual abuse on 47 young seminarians surfaced in Argentina.

In 1995, Cardinal Hans Hermann Gro(Slashdot alpha sucks)r resigned from his post as Archbishop of Vienna, Austria over allegations of sexual abuse, although he remained a Cardinal. Since 1995, over one hundred priests from various parts of Australia were convicted of sexual abuse.

From 2001-2010 the Holy See, the central governing body of the Catholic Church, has "considered sex abuse allegations concerning about 3,000 priests dating back up to 50 years" according to the Vatican's Promoter of Justice.

Pederastic institutions tend not to poll well. The only surprise is that it took this long.

Coincidence? I think not.

Comment: electrical engineers nearly get it (Score 0) 179

by epine (#46679529) Attached to: "Nearly Unbreakable" Encryption Scheme Inspired By Human Biology

The keyword here is nearly, which means it can be broken.

OMG, I can't believe this tripe snipe got voted up to 5. This kind of thinking would set mathematics back by nearly 200 years.

Infinite doesn't mean what you think it means (continuum hypothesis undecidable in ZFC).

Continuous doesn't mean what you think it means (just for appetizers, the Weierstrass function, Cantor function).

If you're an EE who has never taken a course in measure theory, a unit impulse is not what you think it is (Dirac delta function); "Formally, the Lebesgue integral provides the necessary analytic device.")

Is the Dirac delta function nearly a function? I guess it must be, because it certainly isn't a function by any formal definition that doesn't look like Spock chess compared to naive algebra (subsuming, for starters, all that came before circa 1850), yet it takes you to where you want to go, regardless, so long as the first step on unfolding your algebraic briar patch is an implicit integration.

Sometimes "nearly" is employed to mean "without first having to enter into abstruse thickets that probably wouldn't change a damn thing anyway, but I don't wish to speak as carelessly as calling the Dirac delta function an actual function because those daft EEs might just start to believe in the fiction".

Comment: propogation of advanced human technology (Score 1) 392

by epine (#46663827) Attached to: How Many People Does It Take To Colonize Another Star System?

This is a naive estimate—typical of wide-eyed wanderlust—looking at one tiny piece of the problem.

I'd say a population of about a million is necessary to maintain working contact with human technological culture, and pass this working contact on to the next generation. There's a bit of a gap between a Wikipedia article on metallurgy and a guy who has practised the profession for several decades.

In anthropology, often when a smaller population contracts major technologies are lost, not because they are forgotten, but because there isn't enough bread of expertise to sustain the technological cycle.

Comment: good engineering RIP (Score 1) 277

by epine (#46651403) Attached to: NYU Group Says Its Scheme Makes Cracking Individual Passwords Impossible

Now a days you don't have to worry about [small sky falling], but you do have to worry about [large sky falling].

Once upon a time, real engineers solved the solvable problems in whatever order solid solutions presented themselves, so that presently unsolvable problems evolved into greater relief.

I thought it was a good system. Good engineering, RIP.

Comment: Re:Sudoku's complexity (Score 3, Interesting) 44

by epine (#46642455) Attached to: Data Mining the Web Reveals What Makes Puzzles Hard For Humans

A huge amount of it is in the presentation, and how the player conceptualizes the puzzle, and how much of the problem can be handled automatically by visual processes.

It's not just that. The puzzle solvers essentially adopt their own rules for what consistutes a valid solution step.

Once I started completing most five stars puzzles in twelve minutes or less, I started to mainly work the "insane" category. My preferred method is to logically eliminate a single digit placement: this digit can't go here in this box. In the insane puzzles, one often gets to a place where are few digit placements one can reasonably crack with an inference chain without going more than three levels deep.

At that point, it's pretty easy to get completely stuck for ten minutes looking in all the wrong places. That same situation can often be "solved" in under a minute with a four colour pen and the willingness to posit and backtrack. Normally this is against my personal code.

Once upon a time I compiled Knuth's dancing links and threw some "hardest ever" puzzles at it that came up in a quick Google search. One of the first such puzzles I tried solved without a single backtrack step: at each point where the algorithm made a guess, it happened to guess right. There were only three or four or five such junctures of valence 2 or 3. I think I had slightly modified how it sorts the list based on my own intuition about the potency of guesswork, but still, it made a completely mockery of the whole "difficulty" notion. Purportedly one of the hardest of all puzzles (by a certain metric) and Dancing Links goes Rain Man without so much as scuffing its eraser.

When I challenged myself to solve five star puzzles in under ten minutes, there was a complex dance inside my mind to keep track of where I'd shaken the tree already, and what part of the tree needed to be revisited based on recently completed digits. At the slightly faster pace, my mistake production would skyrocket: somehow my double-checking circuit and my "what next" circuit became competitive.

Also, the critical junctures became too thin on the ground, and the punishment for my errors too great, so I lost interest in pushing it any further. It was always for me an excercise in observing my own solution strategies and mental capacities/incapacities.

I think the only way a puzzle-setter can get consistent solution times for a hardness category is by patiently training the puzzle solvers to appoach the task in a certain way, rather than just doing their own thing. I certainly knew with each puzzle setter that I could exploit my familiarity with previous puzzles set at that level of difficulty if I followed the main sequence.

From time to time I would spot an advanced inference early, and then the puzzle would melt away posing no further difficulty whatsoever.

Comment: nobody expects the insta-pimpover (Score 1) 465

by epine (#46640595) Attached to: Indie Game Jam Show Collapses Due To Interference From "Pepsi Consultant"

They didn't realize that corporations want value for their investment.

That's like saying a woman doesn't realize her date wants "value" for picking up the dinner check. No, what they didn't realize was that Pepsi was going to waltz in and set the prostitution dial to 100% from the very first "hello".

You seem to think no show has ever turned a profit that depicts an interesting subculture without the insta-pimpover move.

Comment: Re:Not a watch (Score 1) 97

by epine (#46621871) Attached to: What Apple's iWatch Can Learn From Pebble

What Apple can learn is to manage expectations. Pebble lost credibility because they promised a lot and then could not deliver.

I don't agree with this narrative and I never have.

When your Kickstarter goes viral and you score a 100x multiple on your modest proposal—a proposal which involves custom electronics hardware—you face a monumental problem: having to put a one year warranty on a beta++ prototype you shepherded into mass production with a virgin organization in building mode. You're not exactly a six-sigma shop that never gets a simple ignition switch wrong. The American government isn't going to step in to tide you over if an unexpected recall of 2.5 million vehicles tips your balance sheet into the red.

I bought two Pebbles, and presently one is dead and the other has an issue with garbling the display where I can't always read what it says, and sometimes when I can read what it says, the time isn't correct, because it hasn't successfully updated for 10 minutes.

The dead watch (which went from functioning perfectly to hardly functioning at all in the space of a day) is a more advanced case of the same problem. It still seems to function in many respects, but the screen just flashes garbage with here and there a surprise appearance of a proper image. At this point, the correct screens are so rare it's impossible to navigate any watch menu (unless I use my other watch as a guide dog for the blind).

On the one that still barely works, some of my watch faces are more garbled than others. I've done plenty of micro-electronics troubleshooting in my time, and this looks a lot like loss of signal integrity between the CPU and the display chip due to an insufficient voltage margin. It could be as simple as the battery not responding to current transients as quickly as it once did, so that you see a bounce brown-out that barely dips enough to induce a few corrupt bits on a data signal. You're oh so close. Close, but no cigar. It only takes one wrong bit per screen update to ruin everything, if it's the wrong wrong bit.

Back when People was slipping schedule, people complained bitterly that other companies manage to bring products to mass production a lot faster than Pebble. These people are idiots. If Pebble experiences a 20% failure rate in the field of their delivered product, and has to honour it's warranty on all these failed watches, what exactly is Plan B? Fold up their tent? As it turns out, they did raise some venture capital. VCs don't come along with a fistful of dollars to throw into an RMA pit.

Given their economic and technical parameters, I thought Pebble did just fine in delivering what they did deliver. After a certain point, though, I actively disliked their communication policy. They handled the issue of the colour additives messing with their plastics rather atrociously.

I made one attempt to get my failed Pebble replaced and the communication dried up on their end. By the time I figured out I wasn't going to get the next response, I had become too busy in my own life to pursue it, and I was beginning to notice my other watch glitching and becoming erratic. I figured I would wait until it was bad enough to declare it officially failed, and pursue replacement of both watches in tandem. Based on when I received my watches, I'm guessing I have about a month left on my warranty now.

If they honour their warranty (and the replacements prove more reliable than the first two) I'm still a big believer in the Pebble platform. I couldn't do what I wanted to do with these watches until the 2.0 SDK came out and that has only been out since my watches became unreliable. No point investing in the new API until I find out whether I'm going to have working watches or not.

No matter what Apple invents, it's simply not going to be as open as what I'm willing to invest my time into.

If Pebble turns this into a seventeen email exchange with a week-long delay after every volley, I'm just going to walk away from my Pebble investment, like any other investor who dabbles in a risk bearing portfolio.

Pebble's original delivery problem was inherent in how Kickstarter works. There is no such thing as an electronics production plan where 1x, 10x, and 100x production volumes share identical schedule lengths. Every order of magnitude is a different fish. Sometimes a volume bump permits you to leap over roadblocks. Sometimes the volume bump makes it harder to sleep at night, out of fear that the whole thing turns into a GM ignition switch.

Because Kickstarter feeds on momentum, no adult in the room ever shows up to point out that the subscription euphoria is putting the project onto a negative delivery ramp: that addition subscribers are having the net effect of delaying the product for everyone.

Pebble could have afforded to have a 30% return rate on a production run of 1000 units if a subsequent production run was already well subscribed and they had by then ramped up their production process to a much higher success rate.

They certainly couldn't afford a garish return rate on 80,000 units all delivered at once.

Scenario A: Somebody hands you the keys to a $10,000 econobox and asks you to back it out of a long, tight driveway. You're a little nervous, and exercise more caution than normal.

Scenario B: Somebody hands you the keys to a $100,000 Range Rover and asks you to back it out of a long, tight driveway. You're a little nervous, but you take it extremely carefully and all goes well.

Scenario C: Somebody hands you the keys to a $1,000,000 Ferrari and asks you to back it out of a long, tight driveway. You're more than a little nervous. The first time you tap the gas pedal, it jumps back six feet. You attempt to shift it into drive to pull forward and start again, and something makes a thunking sound. Is it supposed to sound like that, or did you just trash the tranny? You're not so familiar with this kind of car.

How long is it going to take you to back the Ferrari out of the drive way? Half as much time because the car is 10x more powerful?

Sorry, Kickstarter idiots, life doesn't work that way. Yet it seems to be what most unthinking subscribers presumed in rallying behind the myth that Pebble over-promised and under-delivered.

I just wish my two watches worked reliably enough to be worth rolling up my sleeves and custom programming them as I originally envisioned back when I first subscribed.

Comment: Re:It's about time (Score 1) 455

by epine (#46606245) Attached to: Wal-Mart Sues Visa For $5 Billion For Rigging Card Swipe Fees

And as stores aren't allowed to pass the fees along to the card holder every person gets stuck paying for the rich guy with the black card.

Amen, brother. Any right wing neoliberals out there should be as hopping mad about this as about raising taxes.

Paying for a service you don't receive has no place in a free market economy. If VISA is providing a service that people value, then people will choose to pay with their card, despite any additional fees incurred for the service provided.

No, but really what VISA is doing is taxing every consumer, whether we value the service they provide or not, then gifting it back to card holders in the form of a rewards program with a spendy redemption clause.

At some level this is against my personal financial interest, but I pay for everything with my debit card (universally accepted in Canada) at the same price as those paying with credit cards, through I receive no bonus rewards. But I do get a nice free market glow of refusing to accept the terms of the free market-abusing assholes who run the credit card oligopolies. I make up my loss by working harder at being an unconsumer.

Comment: grrrr self-reply (Score 1) 262

by epine (#46600973) Attached to: Prototype Volvo Flywheel Tech Uses Car's Wasted Brake Energy

I did write "break pedal" while still sucking down first coffee. At least I didn't type "break petal". I've done that, too.

Some people experience a brief paralysis on waking. This is caused by different parts of the brain waking up in different order. The brain ordinarily wakes up the steering wheel before the gas pedal, but there are sometimes exceptions.

Comment: Re:energy from BRAKING - best for stop-and-go (Score 2) 262

by epine (#46600967) Attached to: Prototype Volvo Flywheel Tech Uses Car's Wasted Brake Energy

If you are a careful driver and plan ahead to avoid quick braking, and also accelerate at a very modest rate your benefits would be small with this kind of system. It helps compensate for aggressive driving but it seems like it won't benefit drivers that already are trying to get good gas mileage.

I live in a modest coastal city where the traffic is relatively sedate. My main problem avoiding unnecessary use of the break pedal is that so many traffic lights appear suddenly as you crest a hill or exit a sweeping turn giving you no immediate indication of phase, and then BAM! just before the point of no return it goes yellow.

I pretty much make all my velocity decisions in phase space: how close in position/velocity to I wish to be with the traffic around me at which points in the terrain? I've read that gasoline engines are at the top of their conversion efficiency mound when producing about 2/3rds of maximum rated power, so I'm not shy about briefly laying it on to make a quick adjustment in phase space, but always with the goal of making the least possible use of my brake pedal later on.

Also, we've pretty much capped our top speed at 90 km/l since we're driving a small truck. We had a lovely Toyota Truck from way back that traded some paint at xmas. The smallest replacement truck we could find at a fair price is the ubiquitous Ford Ranger, which is a complete joke as representing a "small" truck.

The chicken tax: Why it's hard to find a small pickup truck

Fifty years ago, the United States slapped a 25 per cent tariff on imported brandy, dextrin, potato starch and small pickups. This was in retaliation to tariffs on imported American chicken imposed by countries like France and Germany.

To this day, the 25 per cent tariff on small pickups remains.

Sad news, ideologues. The entire electable spectrum has left the chicken tax alone, from Nixon to Bush to Clinton to Carter.

Countdown traffic lights may cause accidents, study says

Guess what? The carbon emissions also have a definite consequence. If not climate, then conflict. What's really going on here is escaping the horror of first order terms; it's an actuarial NIMBY effect. One death is a statistic. A billion deaths are somebody else's problem, if the coefficient can be construed as the least bit vague.

The real problem with countdown lights is that they require driver judgement. What you really want are a kind of runway light which indicates whether, from where you are—maintaining your current speed—you're going to make it through or not. The number the driver needs is dependent on individual conditions.

One way to do this would be to pot amber indicators in the pavement calibrated to the speed limit (it really should be called the "speed notice" or the "speed weed"—expect to be noticed/plucked if you drive faster than this). If you're driving at the speed limit, and the nearest such indicator in your forward path is illuminated amber, then you will arrive at the intersection in the amber condition.

If you gun it from 150 meters out from some low initial speed, you'll probably notice that you're losing the race with the amber rabbit in time to rethink your testosterone surge. If not, count on losing the long war of technological measures designed to strip you of your driving privilege. Driving stupidity/dead pedestrians breeds cameras. What part of this simple equation can't these people figure out?

This helps to explain the mysterious Flynn effect, where IQ is purportedly rising in the general population, but it's hard to see in real life. Nobody takes an IQ test sitting behind a steering wheel after rushing out of the house 15 minutes after waking from a dead sleep to a shrieking clock, still fumbling with your phone to check that there's nothing vital you need to know before arriving at the last minute to an important meeting, first thing. That would cancel out the Flynn effect faster than McD's can serve up an egg McMuffin.

IQ is like the mass of the electron uncorrected by the Feynman diagram. Most people spend much of their day swathed in moron/anti-moron particle pairs with a half-life of about 200 ms. Plenty of time to bend metal.

Flywheels do a good job of capturing moronium heat loss from these interacting causes: poor public design, and brain-dead driving public. However, with less moronium in the first place, we could have better design and better decisions. A flywheel weighs about as much as one passenger and you carry it all the time. Cluons are like neutrinos. The extra mass is almost imperceptible.

Guess which is coming down the pike.

Comment: on closer look, she's sorta okay (Score 1) 242

by epine (#46595113) Attached to: Hacking Charisma

I just watched [https://www.youtube.com/watch?v=LMu_md_5PQ4 Olivia Fox Cabane: Build Your Personal Charisma] after reading TFA.

TFA drive me nuts with the smooth smooth smooth smooth smooth "I'm going to say something eventually" writing style. About 25% of the way in, I was going "just fucking spit it out, if you've got something to say".

Olivia's video presentation is stiff for the first half, but warms up when she gets to warmth, and she does a reasonable job of the question session afterward. This is less a cult than simple consciousness raising. We so rarely think about how charisma is manufactured. We treat it like juicy sausage. Either you've got it or you don't.

What it really boils down to is that as emotional beings, many of us live life hanging our dirty laundry in the front yard, and letting the paper cups from our recycling bin catch in the wind and blow up and down the street. No, the charismatic house is the one with the nicely tended garden—even if there's a giant compost bin in the back yard behind the fence.

She also mentions the power of the placebo effect. I think by this she means that powerful people have to pay powerful fees in order to feel powerful medicine.

The rest of us can buy generics and do just fine.

To understand a program you must become both the machine and the program.

Working...