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User: blueg3

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  1. Re:IQ correlates to academic success. on What Does IQ Really Measure? · · Score: 1

    It varies a ton based on school district and individual teacher. Thankfully, I had a few good schools and a few great teachers who were able to keep me interested in things while also getting through mandatory instruction. :-)

    I highly suspect that my lack of interest in history correlates strongly with the low quality of my history teachers

  2. Re:150 divided by on What Does IQ Really Measure? · · Score: 1

    Everyone who's never posted on Slashdot has an undefined (or "infinite") IQ?

    Seems fair.

  3. Re:Ah but in the funny world of feedback loops... on What Does IQ Really Measure? · · Score: 1

    To be fair, I didn't read TFA, but it seems like not being motivated and scoring poorly on a test will always be correlated.

    Also, apparently one of the reasons they prefer to do IQ tests on young children is that you're more successful at factoring out motivation or lack thereof. (Though I suppose for people who are sufficiently old, the only people taking IQ tests are ones who are pretty motivated to score well.)

  4. Re:Easy on What Does IQ Really Measure? · · Score: 1

    To some extent, only if you equivocate on the meaning of "experience". Ideally, no experience should factor in. Realistically, your familiarity with and comfort with IQ tests can factor in. What is not supposed to be measured is your prior life experiences with things that are not IQ tests. (Of course, no test is likely to succeed in this goal perfectly, but they do a fairly good job.)

  5. Re:I have done several different IQ tests on What Does IQ Really Measure? · · Score: 1

    To be fair, it depends on the quality of the IQ test and how varied a sample of test you took. Many readily-available ones are wildly inaccurate. Even common IQ test aren't accurate above 140 or so. Different tests also use different conventions for things like what the standard deviation of IQ should be, so it's easily to get wildly varying results.

  6. Re:IQ measures IQ on What Does IQ Really Measure? · · Score: 1

    This is what happens when people go overboard with correlation vs causation bullshit.

    There's almost certainly a causal relationship between intelligence and score on an IQ test. That does not necessarily mean that an IQ test is, especially for an individual, a reliable measure of intelligence.

  7. Re:what's really going on? on Why Science Is a Lousy Career Choice · · Score: 1

    Well, at the school I went to, most of the engineering departments had Indian and Chinese students who worked long hours and were reasonably well-educated but cheated like the dickens and weren't that great at problem-solving (not compared to their American and European counterparts, at least). Almost everyone in the physics department, on the other hand, was very well-educated and clever. There were a few people who couldn't cut it, but they were evenly distributed demographically.

    A quick review of journals -- especially if you're reviewing submissions -- will show you that there's a ton of low-quality research coming out of China these days, though.

  8. Re:Say What? on 50% of Apple's Revenue Comes From the iPhone · · Score: 1

    Actually, the tables are fairly readable, but they're a bit tedious to find.

  9. Re:Misleading Statistics on 50% of Apple's Revenue Comes From the iPhone · · Score: 1

    Growth by what? If you measure computer market share, their growth in smartphones isn't influencing your data. If you measure growth by, say, revenue or market capitalization, they've grown by much more than a factor of 2 -- so they've had significant growth even if you remove their entire smartphone business.

    Including the hyperbole, though, their growth isn't actually that fast. The iPhone's been out for a number of years and Apple's big growth boom has gone on longer than that. If everyone was going to be using Macs within a few month, then they should be about 95% Macs already. :-)

  10. Re:10x Stronger than X property??? on Graphene Super Paper Is 10x Stronger Than Steel · · Score: 1

    None of those properties are "strength".

    When you compare to steel, it's almost always tensile strength.

  11. Re:um... on Why Does the US Cling To Imperial Measurements? · · Score: 1

    If you're really doing particle physics, you use units that nobody here is particularly familiar with and are generally neither SI nor Imperial.

    Of course, if you do physics of any sort, you prefer to do measurements or computations in SI (since aggregate units are a bit easier to deal with), but hopefully appreciate that units are entirely irrelevant.

  12. Re:Building Industry on Why Does the US Cling To Imperial Measurements? · · Score: 1

    Most cast iron machinery uses interchangeable parts (since parts break) that would make Ford happy. They can and do support metric bits and measurements, and a lot of shops have the metric pieces on hand so that they can work on metric jobs. But there are so many little pieces that all fit together to make something and each piece is already in Imperial units -- it's an enormously more annoying problem than most people appreciate.

  13. Re:Construction on Why Does the US Cling To Imperial Measurements? · · Score: 1

    The important thing is that all the stuff they use (like plywood sheets) comes in sizes that are convenient numbers in Imperial units. It's easy to figure out how to get a 2' x 4' rectangle out of sheet of plywood. There is a ton of stuff that all fits together that already comes in Imperial-unit sizes. Changing all of their sizes is prohibitively expensive, and switching to referring to them by their inconvenient metric sizes is a waste of time.

    You end up in the situation that American machinists end up in -- having a set of tools and parts that are in Imperial units and a set that are in metric, because they're incompatible (both sets of tools being in sizes that are convenient in one system or the other).

  14. Re:The construction industry. on Why Does the US Cling To Imperial Measurements? · · Score: 1

    Interchangeable and machine parts are also a huge consideration. Metric sizes and Imperial sizes for machine parts are completely different, and changing away from 1/4-20 and 10-32 (or 1/4-16 and 10-24 if you prefer) screws is a major pain in the ass.

  15. Re:Arrogant Ignorance? on Why Does the US Cling To Imperial Measurements? · · Score: 1

    Inches aren't divided into anything. Sure, there are these things called "fractions", but they can come in any size the measurer sees fit.

    Cheap rulers have 1/8" or 1/16" rules. Good rules have 1/32" or 1/64". Below that, you usually measure things in thousandths of an inch (a fine measurement for machining).

  16. Re:Some areas use them BOTH. on Why Does the US Cling To Imperial Measurements? · · Score: 1

    Pounds is actually the Imperial unit for both mass and weight. It does predate appreciating the difference between the two, after all. So, we have pounds-force and pounds-mass (in addition to the much-hated "slug").

  17. Re:Carpentry on Why Does the US Cling To Imperial Measurements? · · Score: 1

    Fractional units for money has been around enormously longer than decimal units for money. (Never mind that it's offensive to suggest that US currency is not fractional. We have coins that are 1/4, 1/10, 1/20, and 1/100 of a dollar, obviously. Hell, it's offensive to suggest that a decimal system is not simply a special case of a fractional system.)

  18. Re:Carpentry on Why Does the US Cling To Imperial Measurements? · · Score: 1

    It's easier to subtract 4" from 8' (7' 8").

  19. Re:Carpentry on Why Does the US Cling To Imperial Measurements? · · Score: 1

    Conversion factors are not the same as a "base".

    Imperial measurements are still base-10 like any other decimal number, except they're generally stated in 1/32nds of the measurement unit.

    Metric "looks" easier because of all the power-of-10 conversion ratios, but Christ, you're talking about computers. They should be able to store tables and track and convert units for you. (After all, if you're not tracking and converting units and dimensions for metric quantities, you're bound to make a grievous error.)

  20. Re:It's really quite simple on Why Does the US Cling To Imperial Measurements? · · Score: 1

    The US military, which loves short words more than the American public, already uses the metric system. Hence such useful words as "click". The rest of the world also loves short words, like "kilo" and "etto" (Italian for "hectogram").

  21. Re:Physics on Instant Quantum Communication Is Near · · Score: 1

    You're just equivocating on the definition of "teleport". Quantum teleportation means and always has meant exchanging the states of two otherwise-identical particles. What I was saying is that this is the same as exchanging the particles themselves. This is not the same as the definition of "teleport" that involves motion of mass from one point to another without going through the intervening space. But then, that definition has never been applied to quantum teleportation, so I don't see why you would choose to use it.

  22. Re:Hmmm... on Dropbox Can't See Your Dat– Er, Never Mind · · Score: 1

    They assuredly don't care. They're just helpfully notifying you of a fact that they have no choice about -- as a US company, they have to provide data to US law enforcement upon request. They can spend money making it difficult if they want, but they're still required.

  23. Re:It is not impossible on Dropbox Can't See Your Dat– Er, Never Mind · · Score: 3, Insightful

    They're not lying, they're just being careful with their words and people can't read.

    It should be obvious to any technically-minded person that they hold any encryption keys, since when you install Dropbox on a second computer, you don't need to provide a key in order for it to be successful.

    So their claims are that they encrypt data in transit, encrypt data at rest, and that employees can't access the content of files. There's no claim that it's impossible for any employee to access the content of files because they're encrypted with a key Dropbox doesn't hold, which is what people seem to be imagining. It's simply saying that employees won't snoop on your files because in the normal course of business, they are not provided access with the contents of those files.

    As far as providing the files to law enforcement upon a legally-valid request, they don't really have a choice in the matter, as they're a US company. For any company that exists primarily in country X, it is almost certain that there is a relatively easy procedure for law enforcement agents of country X to obtain any data about you that the company holds. If the country happens to be, say, Lithuania, and you don't travel to or do business in Lithuania, you probably don't care, but it's still true. The only way to prevent this is to make it so that the company is not holding any useful data of yours that they are able to access. In the case of Dropbox, you need to encrypt your files before they get to Dropbox.

    Incidentally, if you have data that you don't want law enforcement to be able to obtain, you should be encrypting it even when it's stored locally. A search warrant for your computer is not really all that much harder to obtain.

  24. Re:Physics on Instant Quantum Communication Is Near · · Score: 2

    As odd as it sounds, there's not actually any difference between teleporting "only" the quantum state of the photons and teleporting the photons themselves -- provide the state you're teleporting is the entire state of the photon. Quantum mechanical particles are entirely defined by their state; beyond that state, they're all the same. (Of course, this is counterintuitive.)

    Still, while the state change technically is propagated instantaneously (a pair of entangled photons are sharing a single state, so changes in the state are "instant"), it's impossible to make any use of this (to transmit information, for example) without transmitting information via conventional means, which can be no faster than light.

  25. Re:Someone needs to read his links on What Happened To the Climate Refugees? · · Score: 1

    Both your and GP's comment have the serious problem that you don't quantify the rate of temperature change in the glacial cycle. Any temperature change can look "very quick" if you scale the time axis appropriately.