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Comment: Sim Sickness (Score 5, Informative) 143

by ShakaUVM (#49191347) Attached to: Developers Race To Develop VR Headsets That Won't Make Users Nauseous

Source: I worked in VR 20 years ago for a defense contractor.

Sim Sickness is caused by a disconnect between what your eyes see and what your inner ear is telling you is happening. Your eyes are extremely sensitive to latency. If you snap your head quickly, even a small lag will cause a certain percentage of people to get nauseous. Having a fast and accurate motion tracking system is crucial, but you also need to have an extremely fast rendering engine and a headset capable of updating quickly as well. Motion prediction helps, also, but does not eliminate the problem. As does making sure your program doesn't require you to spin around a lot.

We can only put up with the horribly slow latencies on flat screen displays because they're not attached to our heads.

Comment: Re:Lots of weird crap coming out of Congress latel (Score 1) 476

by ShakaUVM (#49191301) Attached to: White House Threatens Veto Over EPA "Secret Science" Bills

>First, there is no reason to believe that list is exhaustive. According to the page itself, it is "a partial list of the chemical constituents in additives that are used or have been used in fracturing operations."

It a comprehensive list provided by the major fracking companies as to the compounds used in the last five years.

> It was only released in 2011 in response to a congressional investigation, having been held secret for 60 years.

Yeah. Four years ago. And yet you're defending people who made these claims:

"Like the fracking example parent mentioned; nobody is able to research their methods and the compounds used, because trade secrets"

"There is no scientific literature on how nasty fracking fluid is (blatantly not just inert chemicals) because the companies using it refuse to disclose what's in it."

My purpose in posting here is to note that these claims are, in fact, factually wrong.

>Perhaps you are willing to have your dinner grown next to a factory that can hold its chemical waste secret for 60 years, and then be unable to regulate that waste for another few years or decades, waiting for someone to bother to measure their health effects.

Clearly, your logic is, "Well, ShakaUVM corrected a factual error in two posters, therefore he must hate the environment and want everyone to get cancer."

Perhaps you should think that through a little more next time.

Comment: Re:Lots of weird crap coming out of Congress latel (Score 1) 476

by ShakaUVM (#49191261) Attached to: White House Threatens Veto Over EPA "Secret Science" Bills

>The point is they were widely being used before being scrutinized.

No, the point is you watched Gasland back in 2010, and thought your claim was still true today in 2015.

>Some of the compounds listed in that report (which I don't think claims to be exhaustive) are known or suspected carcinogens.

No kidding. I didn't say they were safe. I said your claim that nobody knows what is in them is wrong.

Comment: Re:Lots of weird crap coming out of Congress latel (Score 1) 476

by ShakaUVM (#49191241) Attached to: White House Threatens Veto Over EPA "Secret Science" Bills

>Read: http://www.reuters.com/article... [reuters.com]

Welcome to Slashdot, where a vote by a state legislature gets moderated up higher than a congressional report detailing all the chemicals used in fracking.

>http://www.newsweek.com/theres...

Or where a person tries to cover up the fact that he got proved wrong because he hasn't checked his facts since Gasland came out in 2010 by stating, "Well, there's still more stuff we can know."

Shall we take a peek at what you originally claimed? Ah yes - "because the companies using it refuse to disclose what's in it."

Bullshit. And you know it's bullshit. Don't try to cover it up by saying, "Well, we don't know *everything* about all the chemicals". This is not the same, and you know it.

Comment: Re:Lots of weird crap coming out of Congress latel (Score 1, Informative) 476

by ShakaUVM (#49187477) Attached to: White House Threatens Veto Over EPA "Secret Science" Bills

>Like the fracking example parent mentioned; nobody is able to research their methods and the compounds used, because trade secrets.

You mean the compounds so secret that there's a wikipedia page listing them all?

http://en.wikipedia.org/wiki/L...

They were disclosed back in 2011.

Comment: Re:C++ is probably a little bit better (Score 1) 395

>Debugging has always been a problem. One of the other posts here suggested using CLANG because of it's better error reporting. Thats right now, after 25 years. Let's face it, C++ is legendary for the obscurity of it's compile and link time error reporting. Beyond that, it's not like the run time debugging environment is any better. All that it supports is the kind of break point debugging that was in C. No value added beyond K&R.

This is true. I teach introductory computer science using C++, and one of the biggest hurdles for my students is understanding the error messages from the compiler. Half the time they don't mean anything unless you already know what it's supposed to mean.

And that's before even getting to templates. Once you get into templates... /shudder. The error messages are insane.

I tried compiling the rather simple boost program from the "getting started" section here: http://www.boost.org/doc/libs/...

Without the proper library linked in (i.e. just doing a "g++ test.cc"), I get 38 lines of vomit that look like this: .text._ZN5boost11 basic_regexIcNS_12 regex_traitsIcNS_16cpp_regex_ traitsIcEEEEE6assignEPKcS7 _j[_ZN5boost11basic_ regexIcNS_12regex_ traitsIcNS_16cpp_regex_traitsIcEEEEE6assignEPKcS7_j]+0x22

Comment: Re:Just release a special edition Bluray (Score 1) 133

Detaching boosters does not provide boost.

They ran out of fuel, and then just barely escaped the falling into the black hole in the slingshot maneuver by disconnecting the dead weight, which magically accelerated backwards propelling the spacecraft it detached from magically into Mars orbit.

There's artistic license (like the drawing of the wormhole, which is whatever, it doesn't bother me), and then there's a landing shuttle which can magically boost in and out of a .99999C gravity well without ill effect or expending much any fuel at all, and yet magically has to expend all of its fuel supplies to slingshot around the black hole, and then accelerates further by detaching boosters, and all sorts of dumb shit like that.

Comment: Re:Just release a special edition Bluray (Score 1) 133

>It's a movie. Most people don't care but for those sticklers, all they have to do is release a special edition that contains a "director's cut" of the film as well as a "science advisor's cut."

There wouldn't be much left, then.

As much as Kip Thorne and NDT have touted the science of it, anyone with even a basic understanding of physics would develop a severe allergic reaction from watching the movie.

No, Nolan, disconnecting an object travelling with you doesn't magically boost you out of a gravity well.

No, Nolan, there is no way to have enough delta-V to boost out of a .99C gravity well.

Kip Thorne has defended the notion of a stable planet right next to the event horizon of a black hole, and maybe he's right, but horrid mistakes like this are scattered throughout the movie.

Comment: Re:Not sure why this is on Slashdot (Score 1) 327

by ShakaUVM (#49036241) Attached to: Ask Slashdot: Panic Button a Very Young Child Can Use

>Pro-tip: When posting to Slashdot, or any other website, write your post in an off-line text editor, then cut-and-paste it into the textarea. That way if their buggy JavaScript, or you fat fingers, delete it, you can just re-paste.

OR you could just install Lazarus and let technology handle the grunt work for you.

http://getlazarus.com/

Comment: Re:Money to be made (Score 1) 412

by ShakaUVM (#48986999) Attached to: Major Retailers Accused of Selling Fraudulent Herbal Supplements

>>You know what they call "alternative medicine" that is proven to actually work? MEDICINE.

Do you know what they call people who quote memes without knowing that they're actually wrong?

Urban legend spreaders.

Ok, I guess that's not as pithy.

But seriously, that's not the difference between alt med and medicine. Even though peppermint oil has a strong research base showing its effectiveness for IBS, it will never be medicine, even though it works, because it's something you can pick up at any supermarket or GNC.

And that's not splitting a hair, either. It is not regulated by the FDA as a drug, so it is not "medicine", even though it is highly effective.

The official definition of alt medicine (from the FDA, WHO, NHS, NIH, etc.) is any medical practice not typically performed in usual practice of medicine.

Comment: Re:Claims without evidence (Score 1) 412

by ShakaUVM (#48977677) Attached to: Major Retailers Accused of Selling Fraudulent Herbal Supplements

>I'm disappointed that even the geeks of /. are so easily persuaded by pharmaceutical industry propaganda.

Even though Peppermint Oil had the highest ratings in both quality of research and effect size, of any of the studied IBS treatments in the paper, I'm sure there are a number of people reading this on Slashdot right now secretly suspecting that it must be bullshit because it sounds too "alt meddy" to them.

>Meanwhile, a lot of prescription medication is clearly dangerous. How many herbal supplements have been taken off the market recently because of health risks? Ephedra is the only one that comes to mind, and it isn't even all that dangerous by pharmaceutical standards. How many FDA-approved drugs have been taken off the market recently? Dozens.

In the IBS paper alone, there were several drugs that were pulled from the market for being too dangerous.

But it works the other way as well. Just because something is all hippie and natural doesn't mean it's inherently safer or doesn't have side effects. St. John's Wort has drug-drug interactions with many many drugs due to its effect on CYP3A4. Grapefruit juice, incidentally, is dangerous as well if you're on a lot of drugs due to its opposite effect on it.

Just because the FDA doesn't ban them doesn't mean they aren't going to be bad for you. In general, the FDA does not regulate herbs unless they can no longer be generally regarded as safe (GRAS).

"There is no statute of limitations on stupidity." -- Randomly produced by a computer program called Markov3.

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