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User: RockDoctor

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  1. Indeed. Large (dangerous) asteroids do not survive their descent. Ever.

    [list of minuscule boulders]
    All of those hit the earth with nuclear force and you can prove that by the stishovite found at each site.

    You're both not wrong, just talking on different scales of things. For "nuclear force" to be significantly dangerous, you're going to need to detonate a significant fraction of the planet's nuclear arsenals - say a thousand or ten megatonnes. Sure, a hundred megatonnes could kill a few people - to the nearest million. but earthquakes get near that range too. They're problems that human beings have shrugged off as temporary blips in the population growth. Bacteria are far more dangerous.

    Take an intermediate - and iconic - undoubted (*) meteor impactor - the Barringer crater a.k.a Meteor Crater : size estimated at a few 10s of thousands to hundred thousand or so tonnes. Nothing identifiable as impactor material found on site. Hit at about the time that the first humans were entering North America. It couldn't even wipe out Stone Age arctic survival experts over a few % of the planets surface. Just not a dangerous thing. And nothing left on the ground from the impactor. Not even any reported isotropic traces (correct me if I'm wrong. Please. With references.).

    (*) undoubted - Well, there are lunatic fringes.

  2. I wish we could see something like that hit a rocky planet just to wake people up.

    Wasn't seeing the carbon-containing compounds of a larger-than-Earth area of Jupiter cooked to a toasty-black enough for people?

    Nature laid on the "You're in a dangerous universe" lecture about a generation ago with SL-9. People chose to not get the message, because the message was pretty unambiguous. Hitting Venus or Mercury with something worse - say a Ceres-size impactor - wouldn't be enough to raise the attentions of most people. (I won't suggest hitting Mars - the debris would have a serious chance of hitting Earth in gigadeath tonnages.)

  3. there is a legitimate (although controversial) scientific hypothesis that such an impact weakened the crust there and helped allow for Antarctica to break off

    [citation required] I'm a professional geologist with a business interest in the tectonic history of the breakup of Gondwanaland, and I've not heard that "hypothesis" even from the kooks.

  4. Re:Double edged sword on Automatic Brakes Stopped Berlin Truck During Christmas Market Attack (dw.com) · · Score: 1

    Fortunately you have to be kind of an idiot to want to murder people like this anyway.

    The idea sounds like a good (for certain values of "good") starting point for an assassination technique. Say, link your (software) attack system to a Raspberry-Pi running an ANPR system with a commodity camera, and embed the hardware in a box of thermite (try reading this slagged SD-card!) Then truck drives normally until the ANPR sees one of th Ministerial fleet of vehicles, when it goes all kill-bot.

    Sounds like the actions of a skilled intelligent assassin to me. And we all know that underestimating your enemies is a sure-fire route to nothing going wrong at all.

  5. Re:Slightly OT on China Plans To Land Probes On Far Side of Moon, Mars By 2020 (phys.org) · · Score: 1

    The markets are open to both Chinese and American products. That's why (most) people choose Chinese products - particularly American companies.

  6. Re:Slashdot much? on How Social Isolation Is Killing Us (nymag.com) · · Score: 1

    which is that computer-mediated social interactions are not very social.

    It's an utter truism, along with bears shitting in the woods and Papal Catholicism. There probably are interesting things about it - like does it actually matter - but bemoaning it isn't going to do much apart from giving the moaner a sore throat.

    Personally, I think we (well, our ancestors-in-common) took a bad step starting to have any social interactions not involving picking lice from each other's skins. It's clear (or is it?) than any lesser sort of interaction will lead to instant death of the species and replacement of both species and genus by something better. Or maybe that has already happened - since I lost my job playing Australopithecus afarensis body double for bad Discovery Channel programmes, I've not been wasting much time on human beings.

  7. Re:Slashdot much? on How Social Isolation Is Killing Us (nymag.com) · · Score: 1

    Dunbar's number

    Only useful thing so far in this topic. I knew of the concept, but hadn't heard it given a personalised name. Rest of the topic : file thirteen.

  8. Re:The seas are NOT going to boil. on Prepare For Even More Volatile Weather in 2017 (engadget.com) · · Score: 1

    We can easily make it completely unsuitable for human life, however.

    Speaking as a geologist, is that necessarily a bad thing?

  9. Re:Finally! on LibreOffice Will Have New 'MUFFIN' UI (documentfoundation.org) · · Score: 1

    My main issue with ribbons is how much screen real estate they require. Your document is what's important, not the UI glam.

    Where's that screenshot of how to make Word For Windows look like Edlin by turning on all the toolbars?

  10. Re:Missing the point on Most Firefox Users Still Running Windows 7 (softpedia.com) · · Score: 1

    Obviously they're not going to delete all your files, but ...

    I don't see how the last part of your statement follows from the "Obviously" part. Please elaborate.

  11. Re:Confusion works well on idiots on Vitamin D Deficiency During Pregnancy Linked To Autism (newatlas.com) · · Score: 1

    Agree on all points. Why it happens becomesclearer when you realise that the informatino media have been replaced by the entertainment business because of the improved profits.

  12. Re:Ten cents (because 2cent coins are disappearing on Ask Slashdot: How Should I Furnish (And Secure) My Work-From-Home Office? · · Score: 1
    Are you going to surf the internet on your phone while sitting next to the desktop with the big screen and real keyboard? I certainly don't.

    Besides - you're in the back yard, so you're very likely to get a signal from your domestic WIFi.

    It also is part of the point of differentiating the spend on the professional working and tax-deductible office equipment from the domestic non-tax-deductible entertainment equipment.

    At my last place of work, because people lived and worked on the same boat (literally) they provided WiFi for personal use alongside the wired network for working use. Separate VLANs as you say, completely separate log-in credentials. And the wireless network throttled to a maximum of 10% of the bandwidth. As I recall, the daily fee for the satellite access was around $5000.

  13. Re:Solutions available in this country : on Can Consumers Fight Package Thieves With Technology? (geekwire.com) · · Score: 1
    I don't know what a public door mailbox looks like in the US. But I do know that I have one of those post office cards on the hall table at this very moment, with the box for "too large for your letter box" ticked. Which is the common problem.

    What I used when I needed it was a box like this, with a padlock hasp welded to one of the latches, and a length of (welded-link) chain threaded through the carrying handle, both chain ends through my letter box, then the chain ends padlocked through a bike-frame in the hallway inside. Not impossible to break into, or to steal. But enough to discourage casual theft while still able to get into the house. Large enough for any deliveries I've had which weren't furniture.

    (Plus, casually leaving lumps of military hardware laying around on the driveway puts ideas into the neighbour's minds which add up to "I don't want to steal from his doorstep." Quite inaccurate, but useful nonetheless.)

    The point about the programmable (mechanical, not digital) padlock is that (1) we had them at work, for toolboxes, special supplies at remote work sites, etc,, so I could borrow a good one from Stores for a few days and (2) it's easier to email (etc) a 4-digit code than it is to email a physical key. After a time, I got a good padlock for myself, with a hasp big enough to go round a spring in the car's suspension and a box on the hasp large enough to keep the car key in. Great for SCUBA diving without frying the electronics in the car key.

  14. Ten cents (because 2cent coins are disappearing. on Ask Slashdot: How Should I Furnish (And Secure) My Work-From-Home Office? · · Score: 1

    wire the structure up for network and power, and furnish it with a small rack, UPS, switch, router, a desk, whiteboard walls, a wireless access point,

    Woah - this is a workspace - yes? So you know what's going to be in there, yes? So what do you want WiFi for? Run cables in conduits for the permanent equipment, and maybe a couple of spare leads coiled up into a corner of the rack for when you have visitors/ customers. If they ask for the WiFi code when they're visiting, that's the time to casually talk about your network security. "There is no remote exploit that an break through wireless security where there is no Wifi hardware. Then if they really want WiFi, dig some contraption out of a box in the corner and let them juggle it on their knee white trying to type.

    Related - you mention laptops. For bang-per-buck you'll probably get better from desktops bolted into the rack. OK, ensure you can transfer your system to a laptop for travelling to show customers ... but you'll need to check that sort of portability/ transferability/ installability anyway. See "security" below too.

    Should I put down carpet and one of those plastic mats for chairs?

    Whatever makes *you* comfortable. But don't make it over-luxurious. Since you'll be claiming the costs of this against tax, anticipate having an audit from the tax man. So get stuff from office suppliers, not domestic suppliers. A £500 chair from BudgetOfficeDirect.COM arouses less suspicion of fraud than a £500 chair from LuxuryLivingroom.COM ; this also applies to the laptop/ desktop question above.

    speakers, and a large flat-screen TV so I can display dashboards and statistics.

    Perfectly justifiable, but bear in mind comment above about buying from office supply companies not domestic. With specific regard to a TV and speakers and security, build the TV into the wall so that stealing it will involve making a lot of noise and probably breaking it. Or take the cosmetic carcass off it, so that it is completely not worth stealing because it won't get sold.

    physical security is somewhat of an issue. [...] Should I use some off-the-shelf lock from a big-box hardware store? Should I install a digital lock?

    You mean a padlock? No. Get a proper door - office supplies again - which has the 5-lever lock and all-frame bolting which insurance companies take as a minimum for securing the house. You're already spending thousands on this spread, so spending a thousand on the door to secure it is sensible.

    Your computing assets and data assets are important. The computers you can manage by using desktops which you BOLT into the rack (no need to spring silly money on equipment designed for rackmount, unless you've a business reason, use this sort of tray and bolt through the rubber foot-holes in the desktop chassis). Put yourself in the mind of the crack-pot looking for things to steal - chest-high 100kg racks of equipment full of exposed bare wires are not saleable, so are not worth stealing. Not even worth leaving fingerprints on. Same applies to a TV : take it's bezel off, bolt it into a fitted recess in the wall and they are more likely to smash it than steal it.

    Data : you might want to put the backup server for the house's computers in your office, and for your office in the house. You've got CAT6 linking the two, so who cares. Arrange offsite storage for your backups. you know the deal.

    This is assuming that your real security threat is from theft. If you're likely to face industrial espionage (or sabotage) hen you're in a whole different world of security. Teach your dog to shoot on sight? Stump up for an office in a premises with proper security on the doors and bars on the 13th floor windows, and forget the home office.

  15. Solutions available in this country : on Can Consumers Fight Package Thieves With Technology? (geekwire.com) · · Score: 4, Interesting

    - Various "locker" countries. Lockers at many locations, often post offices, petrol stations, 24-hour shops. After selecting a bank of lockers which is convenient (e.g. on your way home to/from work), the delivery driver gets the location and a code for sealing the locker ; the recipient gets a code for opening the locker ; the shop keeper/ station manager etc has nothing to do unless there's a dispute, but they get a rental fee. PROBLEM : multiple companies. NEAREST to me : 2 locations in my city of < 10000 people.

    - At least one "warehouse chain" (no store as such, just a warehouse ; you select from the catalogue or online, pay, and the goods are brought to you at front-of-warehouse) leverage their existing delivery network for people to collect goods from their chosen store. PROBLEM : limited number of stores. NEAREST : six miles from me, but I'm often there anyway. Another one 10 miles away in a different direction..

    - Locker by front door : bolt a weatherproof locker by your front door. Close it with a programmable combination lock. Set code on lock, send code to delivery company, lock locker, put paper seal on locker. When you get home, unlock locker, inspect goods. Reverse works for collecting returns. Change lock code for next delivery. PROBLEM : might be too small, might be ugly, these are your problems. NEAREST : I've made these temporarily - metal locker secured by chain through letter box.

    But to be honest, the "card through the door and collect item from post office" generally works fine for me.

    This is not a problem that really need sophisticated technology. Just a little of that rarest of commodities - common sense.

  16. I would be happy with a car that is powered by water.

    Get a Tesla (or golf buggy or milk float ; whatever), a hydroelectric power plant and a dam to feed it with water ... there you are : water powered car.

    Except, of course, that the power is actually solar power, not water power. The water is just a storage and concentration medium.

  17. Re:It might be an issue in the future on Tesla Introduces Fee For Owners Who Leave Their Cars At Supercharger Stations (techcrunch.com) · · Score: 1

    Chill, dude. You're way too stressed if someone cleaning their windshield at a gas pump is bothering you.

    Since petrol stations have the water dispenser (charged, of course) to one side of the forecourt where it doesn't block the pumps, actually it is a significant deal. You fill your tank, go to the office, pay, then move your car either back onto the road, or to the side of the forecourt to water/ air/ windscreen/ vacuum clean or whatever else you're doing. All of thse machines are coin operated, precisely to discourage people from wasting the petrol station's valuable sq.metre-seconds on low-return activities like wiping screens, drinking coffee, etc.

    Some petrol stations have parking spaces for you to stop at as you drink your coffee, but not normally in town. Land is too valuable to waste it on people sitting on it not actively paying for it.

  18. Re: Things to solve on Aging Process May Be Reversable, Scientists Claim (theguardian.com) · · Score: 1

    You "point them off into the stars" method has a couple of issues: first, its expensive resource wise to build and maintain those ships.

    He missed out the part where after 2 generations the ship comes back with a hold full of Soylent Green and a smell of fresh paint. Maybe some nice socks knitted from human hair and a few bars of dental amalgam.

  19. Re:F.U.C.D. on Vitamin D Deficiency During Pregnancy Linked To Autism (newatlas.com) · · Score: 1

    The whole issue involves an additive put into certain vaccines

    SOME of the claims of anti-Vaxxers revolve around an adjuvant included in SOME vaccines, it is true. But OTHER anti-Vaxxers are against the whole idea of vaccination, regardless of the presence or absence of a particular component in the vaccine. Dangerous fucking idiots, the lot of them.

  20. Re:Finally, a real correlation with weather on Vitamin D Deficiency During Pregnancy Linked To Autism (newatlas.com) · · Score: 1

    If Vitamin D is a culprit, then we should see more autism in places like the UK, which are historically deficient in sunlight.

    Logically therefore, places like northern Norway will have even lower vitamin D levels, since they get even less sunlight during the winter months.

    Sunlight is an issue. Diet is as big an issue, if not bigger - and the traditional association of Nordic life with eating a lot of fresh fish is telling in this regard.

    I remember there was a fuss in the UK a decade or two ago about whether to introduce supplements into staple foodstuffs (white bread, IIRC) specifically to address vitamin D levels, folic acid levels, or both. I stopped following the debate since it was only about pregnancy health (someone else's problem), but on checking the bread bag in the bin, there's no mention of either supplement on that bag. But my salt bottle doesn't mention the iodine either, so that's a fat "Meh" on labelling.

  21. Re:Cod liver oil on Vitamin D Deficiency During Pregnancy Linked To Autism (newatlas.com) · · Score: 1
    If you're burping often enough and strongly enough that you can taste stomach contents then you have got a significant heath problem there. Find out the root cause and fix it while trying to figure out what to do about the other problems for which you were taking the capsules.

    I literally can't remember the last time I tasted burp, except when drinking to excess during and after a curry.

  22. Re:Where is the news? on Vitamin D Deficiency During Pregnancy Linked To Autism (newatlas.com) · · Score: 1

    Randomised [Controlled] trials [RCTs] are meant specifically for testing the efficacy of new medicines.

    You can use RCTs for a new drug of course, but you an also use them for a lot of other things. In particular you can use them for non-new drugs (or surgery, or whatever) treating a disease for which there is an established treatment. In which case, you have an RCT of "new treatment" against "established treatment," not "new treatment" against "placebo". You still have to be very careful to monitor your case by case progress (the new treatment may be worse than the established treatment, and it may be worse than doing nothing).

    The method would work for vitamin D, of course, but it would be ethically unsound to deliberately expose groups of people to the well-documented risks that this deficiency would cause, and it would be extremely difficult to control the parameters, I think; you get vitamin D from many sources, such as exposure to sunlight, and you would have to keep large groups of pregnant women confined indoors for 9 months, and so on. Can't be done practically.

    Going back to the "established treatment" case for an RCT, here your established treatment is normal life with normal levels of vitamin D, and the "new treatment" is normal life plus a vitamin D supplement. Thus, no patient gets a worse outcome than the standard treatment would have given them. If I were to try to present this to an Ethics Committee, I'd maybe consider blinding it by putting both arms of the RCT on some non-controversial treatment (e.g. w.r.t. pregnancy, perhaps folic acid) but spiking the "new treatment" arm with the vitamin D as well.

  23. Re:heck of a choice on Donald Trump To Tech Leaders: 'No Formal Chain Of Command' Here (cnbc.com) · · Score: 1

    i mean technically if you overfill a swamp with foetid detritus it will eventually matriculate into neighbourhoods, roads, schools, hospitals,

    Umm no, it'll turn into coal of a degree of dirtiness directly related to the amount of non-organic matter you tipped into the swamp. If there's an awful lot of marine algae, it may produce oil on the way to becoming coal.

  24. Re:basically doing the same as china? on Facebook Is Clamping Down On Fake News, Partners With Fact Checkers To Flag Stories (slate.com) · · Score: 1

    Maybe we should just have the FCC classify them as a common carrier,

    It being over a year since I stopped using Facebook, I don't know what their current claim for users is. But they used to claim a billion users. In which case, the FCC could at most control their behaviour over a third of their users (less if not every one of the 0.3 billion US people has an account, or if FB has grown in the last year or so).

  25. Re:What about red lights? on Uber: We Don't Need a Permit For Self-Driving Cars (cnet.com) · · Score: 1

    Actually, the next question is whether the courts can order Uber maintenance minions - on pain of personal contempt-of-court charges - to enable maximum duration of logging under instructions of the manufacturers. Then wait for the evidence of continuing failures to roll in. (Or, much less likely, for Uber's name to be cleared of this particular sticking turd.)