2344 posts • joined 10 Jun 2009
But far more ingeneous
Re: Why a hexagon?
Why can't it be because of a years-stable period-3 wave in the planet's equivalent of Earth's jet-stream. Watch long enough, we may see the vertices move, assuming there's anything more stable to define their location relative to (which on a gas giant, I doubt! )
Re: North Pole
internal (poorly understood going on 'no bloody idea') heat source.
Something undergoing a phase change such as gas or liquid to solid, both down in the planet's depths. Outside chance that it's a low level of fusion (D-D), or there's a lot of radioactive Potassium in a rocky core that theory says Saturn shouldn't have.
Lots of hydrocarbons, enormous pressure: what are the odds on Saturn's atmosphere concealing the Solar System's second-biggest and still-growing diamond as its core?
Short of closing down the internet how *can* the authoritoes close Bitcoin down?
Anyway, it's not new. Since the earliest days of the Chinese Empire (and probably earlier, but the records have perished) there have been trustworthy(*) alternative criminal(**) organisations which would move your money across borders and around accountancy barriers for a fee. Typically you hand over some money and receive a token, such as a roughly torn sheet of paper. You later present it to a representative of the same organisation at another location, and they match the other torn piece and then hand over the agreed amount of cash.(***)
(*) for certain values of trustworthy
(**) according to the authorities, who ask more in taxes than the alternative asks in fees.
(***) this practice may even be the origin of paper money instead of gold, brought back from the underworld by the authorities, who could then back several banknotes with the same piece of gold and get away with it for centuries. Behaviour which any self-respecting criminal gang would be ashamed of.
Re: What goes around...
I wouldn't want to be these crims when they get caught.
Especially if it's organised crime that is first to catch up with them. It's probable that organised crime has also had its data corrupted, and what can they do? Can't inform the authorities. Can't pay the ransom, in case it were a sting by the authorities. Can do something hideously violent and permanent to the perps if they find them.
Re: backups and...
Linux LVM snapshot will preserve the state of the LVM at the time it was taken. Cryptolocker, or anything else not running on the Linux LVM host, could only affect the snapshot if it were mounted and exported read-write. A common practice is to mount it read-only and export it read-only, so users can perform self-service rescue of files they (or cryptolocker) have messed up. RO mount means that only a root exploit on the Linux host can damage it, but then copying the snapshot to offline and offsite storage is a good second-line, not least should your backup volume fail.
One caveat - make sure that the snapshot LVM is the same size as the source LVM so that should Cryptolocker or everything else write to most of the blocks on the source, the snapshot doesn't run out of space.
Re: Title is too long.
£10 + £1 is still £11 whatever way you cut it.
ROFL. Whatever legal way!
One of the oldest "victimless" frauds was dropping all fractional pennies into a personal account, instead of rounding or dropping them into the bank's own account.
Re: Calm down...
It's to stop the "flip it over" problem that USB connectors seem to magic upon themselves - Cable won't go in - Flip it over - won't go in - flip it over - goes in.
A USB connector is a Fermion not a Boson. You have to rotate it 720 degrees before it's back in the state it started in.
(A corollary of his is that no two USB memory sticks can ever have the same internal state :-)
Re: Resistance is futile
@Wzrd1 - a fundamental misunderstanding of CMOS. In a pre-CMOS computer, a bit was represented as a flow of current. It's consuming power even if it's just maintaining an unchanging logic level for minutes on end.
in CMOS a bit of state is a package of charge - maybe as little as 100 electrons. No current flows except when a bit of state is chaged, when the electrons have to be removed from a high voltage (probably representing a 1) to a low voltage (0). CMOS can work on micro- or nano-watts. Witness the hand calculator powered by a couple of square cm of low-grade PV panel, illuminated by an energy-saving dim light bulb (and operated by a dimmer one - sorry). Easy when you want single-digit IPS not MIPS.
Moore's law is based on a scaling law. If you shrink the devices by a given factor, reduce the voltage (between 1 and 0) by the same factor, you have constant power per unit area of chip and that factor squared more devices to play with in the same area. The limiting factor is that atoms are discrete, and today we are at the point where the gates of the FETs can no longer be made much (if any) thinner. So the scaling law can't be followed any further, and the first sign of trouble is that the chip runs too hot because it's suffering resistive heating from various sources.
At a guess they aren't stable. AFAIK there are NO silicon or germanium analogues of aromatic (C6-ring-based ) hydrocarbons. In fact I don't think there are Silicanes either, apart from Silane. Instead you get silicone chemistry, based on Si-O-Si bonds.
But I may be wrong, because I'd have thought Stanene even less likely. Is it really stable in the presence of Oxygen? Water? Or is it like one of those "things I won't work with" (Google that phrase for some fun reading about molecules that fall apart at the slightest nudge -- or occasionally, against all expectation, that don't).
Re: Tin pot
Graphene was a neologism
A logical one. The multiple-ring hydrogen-carbon compounds with delocalised electrons have names ending -ene (Napthalene, Anthracene, Pyrene, Benzpyrene ... getting more carcinogenic as they get bigger )
So the one that's so big you can peel it off a lump of Graphite with Sellotape was christened Graphene. Until someone did that, it was wrongly assumed that it would be unstable and couldn't exist. (I'd have voted for Sellotapene)
Re: 100 percent efficiency?
I expect they mean it superconducts only at isolated edges. Pack a load of edges close together and they simply aren't edges any more. The electrons in one edge start interacting with those in other edges and I'd guess the whole thing becomes an ordinary resistive bulk conductor on the macro-scale.
There's a similar problem in the Semiconductor industry. SiO2 is a good insulator, but only in bulk. As you start trying to make thinner and thinner FET gates, you eventually get to the point where most of your SIO2 is surface and the rest is influenced by being only one bond away from a surface. At which point it ceases to be a good insulator and Moore's law runs out of road.
Another similar conundrum is the tensile strength of a carbon "buckytube" molecule. Strong enough to build a space elevator ... except how do you assemble buckytubes into a bulk material? What "glue" can you use, that doesn't change the (admittedly large) molecule into something else?
Re: No, the -ene ending is entirely inappropriate.
Given that there's no carbon and no double-bonds in this entirely inorganic new material, the suffix is completely incorrectly used.
Not exactly. Chemists break those rules all over the place (for lack of syllables? ). -ane refers to a hydrogen-saturated compound of carbon and hydrogen, except we have Silane (SiH4) Borane (BH3 ... sometimes ... lots of other wierd BmHn compounds), and even, if memory serves, Stannane (SnH4). There's the clue: Tin is a group IV element and although it usually displays metallic character, in this -ene it seems to be displaying the same delocalised electron bonding as Graphene.
the thing that's puzzling me is the Fluorine. Two Flourines per Tin should tie up two electrons, so is it maintaining a delocalised ring structure with 2/3 electrons per "bond" rather than 4/3 as in Graphene? Doesn't that make it perfluorostannane? (And can one manufacture perfluorographene, which might make PTFE look sticky if it can exist at all? )
Outsourced / offshored?
Unless, of course, it's outsourced and offshored, so that if someone is "fired" he just gets swapped with someone making a mess of some other organisation's IT. If the entire outfit to which it is outsourced is "fired" the same principle will apply: you'll end up with someone else's rejects, either directly or indirectly (though mass hiring, firing, and forming new companies to tender for the work)
Outsource the catering and the cleaning. If it's mission-critical it must be done in-house. If it's mission-critical and it fails because of under-investment, the CIO (and possibly CEO, rest of board) should be taken out and shot.
Re: Law seems clear
"forbidden to have a screen mounted where the driver can see it. Turned on, or off. I don't see how this defense can fly.
The Google glasses weren't mounted, your honour. They were being carried. Carried, I hasten to add, in a way which in no way impaired the ability of the accused to drive safely.
Re: "nothing illegal to be wearing Google Glass"... yet.
Out of interest, a 'complete halt' as opposed to what other kind of halt?
Stop-start nudging forwards at walking pace or less in a motorway traffic jam? Seriously, that's one situation in which I defy UK law. If the motorway has been at an all-but-standstill for >10 minutes, I'll call ahead on my mobile to let folks know I'll be late. Which is illegal, because my car isn't parked. Also difficult, because all the other cars are also doing it, and overloading the local cell!
Not relevant to this thread, but I've also had it explained to me by a USA cop that a STOP sign means that one must bring one's vehicle to a completely stationary 0mph stop. Slowing down to less than walking pace and seeing clearly that there's no reason not to turn right (like a left in the UK) is illegal. Only reason I didn't get a ticket and fine was being a newly-arrived foreigner. The law is probably the same in the UK but here a STOP sign is used only on a junction with truly terrible visibility where you would be mad not to stop anyway. Otherwise it's just a "give way". In the USA just about every junction has a traffic light or a 4-way stop.
It is a conspiracy, in that there are public plans to deny us choice by discontinuing FM broadcasting at an unspecified future date. Until an announcement is made that FM is here to stay, be very afraid for your music broadcasting.
Once that announcement is made, expect DAB to die out. The only reason it got any market penetration at all, was a lot of people bought a DAB set to try it out on the back of a load of media hype. (This customer hasn't binned his DAB set because it does represent a slight improvement over BBC World Service reception on AM. The other preset buttons remain unset).
And the funny thing is that your FM receiver doesn't notice. That's right, FM broadcasting is far less vulnerable to interference than digital broadcasting.
(That LED light is faulty, though. Or a cheap illegal import that doesn't meet EC RFI requirements)
Re: Yes, digital is always better than analogue
The problem is with the data-compression used by DAB (and compressed MP3 etc), and the fact that the algorithms chosen generate time-varying non-harmonic distortions. Digitisation, as used on CDs and studio-master recorders, doesn't do this to any audible extent.
Vinyl, valve amplifiers, and carefully constructed nonlinear transistor amplifiers generate harmonic distortion, which colours the music. Some people prefer it that way. I don't prefer it, neither do I detest it. At low levels, without the ability to compare sources with and without low-harmonic distortion, it's impossible to tell whether the tonal colouration was there on the master or not. Draperies etc. in concert halls also colour the music, by removing greater or lesser quantities of harmonics.
If the only source of broadcast music is DAB, I'll never listen to broadcast music again. What it does to music (even with perfect reception) is simply vile.
Re: Radio Silence in Cars ?
Fuck DAB till it has a genuine 95% saturation rate. Until it gets that far, it's useless
And even if it does get that far, it'll still be useless. I'll just have to stop listening to radio, and spend a bit more time compiling my own zero-compresion music collections.
Re: Quote "XP is like 13 years old. Get with the 21st Century."
If a stalker knows enough about me to impersonate me to obtain my vehicle's location, they likely know where I live already as it'd be one of the security questions so why would they go through the hassle and risk of exposing themselves further?
That might be the point. Someone you want to avoid, doesn't know your location but has access (legally or otherwise) to various large collections of data.
The other reason is that an automobile "accident" is much easier to arrange and much less likely to lead to a full murder enquiry, than any other sort of "accident". And the more they knew about your habitual routes, the easier it would be.
All hypothetical. Some people care about their privacy more than others.
Re: Quote "XP is like 13 years old. Get with the 21st Century."
Clearly you're lacking some knowledge on how these trackers work, they do not report your every move, you report the vehicle stolen, the company that provided the tracker contact the car and retrieve it's location.
At the risk of posting something that really belongs on the Snowdon thread, why on earth do you trust that the tracker company is the only organisation that can do this, and that it would never do so on anyone's behalf except your own?
All I can say is I hope you never have to live in fear of a jealous wife, a new partner's wealthy psycho-stalker, a criminal organisation that wants to erase an inconvenient witness before he can talk, or a government run by a mega-humanitarian like Joseph Stalin. (Mega-humanitarian: eats people by the million).
Re: More on win8 please.
any new laptop purchased now is going to come with win8, I'd like to know exactly what evilness MS has in store for those of us who want to dual-boot linux.
Make those restore DVDs as soon as you've unpacked it. Then make another set just in case. Assume that your first attempt at converting it to dual boot will brick it at the software level, and then you can only be pleasantly surprised. (Unless you manage to brick the hardware - far too easy on certain Samsungs, supposedly now fixed in the BIOS. They blamed Linux until someone demonstrated you could also brick one trying to dual-boot two versions of Windows).
Use Google. Read about the generics, and as much about the specifics of your model as possible.
It's probably running in secure boot mode as shipped. This can be turned off, from within Windows 8. I'd recommend that you do. After that you just have to master re-partitioning a UEFI disk, installing Linux into UEFI partitions, and installing Grub2 or other boot manager. Alternatively you can have "fun" trying to install a secure-bootable version of Linux.
The quick and easy way for casual Linux usage is to download free-beer VMware player for Windows and run your Linux inside Windows. (Yes, I know, leaves you feeling unclean just thinking about it. But easy) The other way around requires paying Microsoft more dosh for a retail Windows distribution (or playing fast and loose with your employer's volume license ... which might just cost you your job so don't.)
Sorry, I'd forgotten Vista. Wiped it completely from my mind, or maybe Microsoft brainwashed it out of me. Though in my defense I could assert that Vista was just a Windows 7 RC, which should never have been sold or even shown to the world.
And was/is Vista more resource-heavy than 7? My impression of it was that it was buggy and brain-damaged in equal measures, rather than that it would have been OK given 4Gb RAM and a CPU speed boost.
Good luck with Windows 7 on an ancient underpowered netbook. It's the most resuource-heavy Windows Microsoft has produced to date. Personaly I think 4Gb is its minimum RAM (and a Netbook can't have more than 2Gb). Windows 8 is actually far less demanding.
On the other hand if you have a Lenovo T400, Windows 7 is OK after you have upgrade the RAM to 4Gb. If you also replace the HD with an SSD ... who needs a new Windows notebook?
Wish you'd reported the kid's feelings about other Linux Desktops (KDE, Gnome3, Cinnamon) but I guess a bit OT.
Re: massive blackmail database being compiled...
The scary thing is that "big data" techniques mean that the database does not actually have to be compiled. They can just do a search for dirt on anyone who is deemed to be a legitimate target, through just about everything that's ever been recorded about everyone. The NSA is filling a data centre mot much smaller than Wembley Stadium with 4Tb disk drives. We're all in there. If you've had an extramarital affair in the last decade, I'm fairly sure they can work out when and with whom, just as soon as they get the order to look for dirt on you. If you have one this next decade, it will be a dead certainty they'll be able find out.
I didn't really get "Rule 34" when it came out. When I first read it I thought it was for laughs. Now, it's starting to feel as chill as the bad stuff in the Laundry, and a lot closer to real life. Skynet is unlikely. ATHENA, on the other hand ....
Ad hominem attacks are OK by me when they consist of revealing that someone is a hypocrite. Because a hypocrite is someone who should be attacked for what he is. The adjective "nauseating" is often applied, because any decent person will be sickened by anyone who preaches one thing in public and engages in its opposite in private, regardless of whether they support his public position or oppose it.
Re: good, but ...
MRAM or RRAM (HP's memristor tech).
But chip stacking as a technology might be valuable in conjunction with either of the above, to deliver truly awesome bandwidth. Or, stack RAM on the CPU, to reduce interconnect speed-of-light latency. Stacking is almost certainly worth researching.
Re: Just don't get me started on
Caesium for an even more explosive reaction. http://www.youtube.com/watch?v=QSZ-3wScePM (Open University broadcast. I have to wonder how many out-takes before they got the Caesium just right :-)
Re: Coming up next on Mythbusters....
Judging by what Coke does to teeth, keyboards and electronics, the answer should be a resounding "Yes and you don't need the Mentos". What's a Mento anyway?
at least this one is under cover.
Actually I'm sure that's what I'd hate most about it. It' s possible that an Amazon warehouse has a transparent roof, or even just skylights, but somehow I doubt it. A day spent with nothing but industrial high-efficiency lighting would really suck. I once threatened to resign if I wasn't relocated to a location with a window. (They moved me rather than calling my bluff. I meant it).
I could walk eleven miles in a day and enjoy it (if sunny and outdoors) until I reached my 40s. I probably still could after a week or two toughening myself up. Ask someone in the army what they're expected to be capable of. And that's before hostiles start shooting at you. And they say they enjoy it!!
Re: Comp Sci degrees were sold to many kids looking for a well paid job....
You don't want a CS graduate. You want a Physics graduate who enjoys programming.
Doomed to fail
Unless there's a measurable difference in the isotopic makeup of Australian and African Tantalum, this is doomed to fail for lack of verifiability. Put bluntly, we'll just create a financial incentive for smugglers and corrupt miners. We'll be paying more. The horrible slave economy in Africa will be getting much the same for much the same. The new intermediaries will be pocketing the difference.
A better answer would be to make Tantalum obsolete. It's used for capacitors, isn't it? Can't we work out how to make Graphene capacitors (or something) with four billion dollars spent on research?
Re: 13 billion light years old or 13 billion light years away?
Back to relativity and that difficult concept "now". The light we observe has been travelling for an estimated thirteen billion years. The space it has been travelling through has been expanding. It was a lot less than thirteen billion light years distant when that light set out. By extrapolating, we can work out that light emitted by that object at this time (insert relativistic caveats) won't get here in thirteen billion years. Forty billion might be a better guess. Or not. It's a long time to wait.
If the expansion of the universe really is accelerating, maybe that object will move right outside the boundary of our observable universe at a future date. (In that case it will become more and more red-shifted, until the redshift becomes infinite and it disappears).
Re: Not as safe as people believe
To say nothing of PCs and other electronics with exploding power supplies. I once watched a switch turn itself into a small flamethrower. It's a good thing I was there to yank its power cable. Another time a PC PSU went BANG and took out the power to about forty rooms.
And don't talk to me about water heaters.
Re: Isn't Nicotine itself harmful?
Well, if the toxic effect on the vaper himself really is no worse than a serious expresso habit, I'm willing to accept that passive vaping is unlikely to be a serious hazard after the vapour is diluted in a large volume of air. Which just leaves the aromas.
During the hayfever season, most strong aromas and scents can send me into a sneezing fit. Vapers, please note. (This occasionally happens on the tube in response to perfumes. Any heavy perfume-wearers reading this, please fix in your memory that I enjoy my sneezing even less than you do, and that it is YOUR FAULT -- although I'm usually too polite to point this out )
Isn't Nicotine itself harmful?
Cigarettes cause cancer and heart disease. The former can be squarely blamed on the carcinogens in the tar, but the latter? The blame was usually laid with the nicotine ... is this now believed to be incorrect? (Citations rather than opinions sought).
If Nicotine is indeed a cardio-toxin, there is good reason for banning vaping in a public space or workspace. As for smokers turned vapers, they're reducing the harm to themselves, but by how much? Are they reducing their nicotine intake, or increasing it?
Time to re-christen the local pub?
There are lots of pubs called the World's end, because back when Jeremiahs were proclaiming the end of the world on an annual basis, the local reprobates would gather at the pub for one last drink before their eternal damnation. When that didn't happen, they had a few more drinks and renamed the pub.
Anyway, after that ramble, I'd suggest that this estate's local be re-named the Cock and balls. With a perfectly clean pub sign, of course. And a Google maps reference.
Re: Wintel irrelevance == x86 irrelevance
If it doesn't need Windows, it doesn't need Intel.
Hmmm. How else can I buy a really fast server for crunching numbers or big data using Linux? Say 4 CPUs, 32 Cores, and half a Terabyte(*) of RAM? Sun's gone. HP IA64 systems don't make financial sense unless you want to run VMS. Much the same for IBM Power-based systems. AMD have sadly fallen behind again, their Opteron glory days are behind them. GPGPU computing has its place, but so far, it's a fairly restricted subset of scientific programming for which a GPGPU is the answer. Don't think I've missed anyone.
(*) There's such a machine crunching away a hundred yards or so from where I'm sitting. It's attacking large sparse matrix problems. If you know what that means you'll know why it needs that much RAM.
Re: Wintel irrelevance == x86 irrelevance
Intel has nothing interesting to offer the ARM community.
Not true. Intel's process technology is second to none. If they process-shrank and fabbed ARM chips, they would be the best ARM chips on the planet anywhere in the power - performance envelope.
How else do you think is is that Intel can just about compete in the handheld market with that horrible warty i86 architecture? But I don't think Intel can hold the fort for much longer. Soon, they will be fabbing ARM designs.
Re: lost the plot
Intel lost the plot when they acquired Alpha from the wreckage that once was Digital, and buried it as "not invented here". AMD picked up a bunch of talented engineers with lots of Alpha know-how in their heads, produced the AMD64 architecture, forced Intel to follow instead of lead, and almost knocked Intel off its perch. If it hadn't been for an Intel "skunkworks" project that was keeping the original Pentium-3 alive, when the Pentium-4 architecture hit the speed barrier Intel would have been finished.
This battle, which AMD ultimately lost, is probably why Intel didn't spot the threat that ARM and handheld devices posed until it was too late. (I think AMD did spot the threat, but didn't have the corporate strength to respond sufficiently). In another universe, Alpha could have been stripped back to its origins, producing a low-power chip more than the equal of ARM, and with Intel's process technology behind it ....
I still dream of a world where the dominant 64-bit architecture is Intel Alpha, and where x86-32 is ancient history. Intel took one of those wrong turns on which empires totter and fall. I still have the Alpha Architecture handbook to remind me how a really good CPU might have been.
Microsoft is destroying itself, by failing to understand and nurture its own business niche.
It had a near-monopoly on the business desktop. That was its niche. Even after losing the server-protocol war with the EU, Office should still have been an all-but-unassailable advantage.
So what does it do? Instead of listening to its business customers, it listens to the numerically larger number of home users who bought an MS system for lack of an alternative. then it redesigns all the interfaces to suit its idea of Joe Public (which appears to be even more drooling than Joe actually is). Office has suffered three interface redesigns in ten years, each reducing the productivity of a skilled user of office 2003. Now they've done the same to Windows.
Joe is unimpressed. There's Apple, offering a superior consumer-orientated product range at a superior price. There's a host of companies selling Android pads into the fastest-growing non-keyboard sector. Joe never had a good reason to buy Microsoft, it's just that to start with there weren't any alternatives.
What hasn't materialized yet is a really good Linux- (or Android- ) based business desktop solution set with a big corporation backing it. IBM? Apple? Oracle? Samsung? China inc.? The next young Nokia (who started off growing trees and making tractors before getting into cellphones almost by accident)? Even (long odds) a fully open community project? Whatever, when that business alternative arrives, Microsoft will be finished, because for the last decade it's given them every last reason and more to regret their dependence on Microsoft. A trickle of defections will become a flood.
It's got nothing to do with which CPU goes inside at all.
why the military were so eager to get involved from the outset ?
Actually the military invented it before civilians knew what a computer network was. It was designed to maintain communications during and after a nuclear war, and probably would.
"Military intelligence" is reputed to be oxymoronic, and certainly isn't what most of the public need to be concerned about. It's the non-military state internal intelligence agencies that concern us, especially when the rules applied to us are not equally applied to our masters / political superiors / rulers / pond-slime / whatever you call them.
Re: On the other hand....
Actually it's quite a neat way of making Mathematica available to kids without cannibalizing its own market because their parents will use it. Don't cripple the product, just put it on very low-powered hardware. For the sort of uses that a non-genius schoolchild will make of Mathematica, an RPi will be OK. For the sort of uses that a university-graduate parent is likely to want to make of it, an RPi mostly won't be.
As to whether letting a kid use Mathematica before he knows any pure mathematics, I'll reserve judgement. I'm certain that giving schoolkids calculators has rendered them number-blind (eg incapable of telling that whatever 3547+2974 might be, it's not 4xxx or 5xxx). There's a danger that Mathematica might blunt any true mathematical insight that they might be trying to develop, rather than the opposite.
Re: Best name evar
A vacuum cleaner. With a Dyson you can even see the gamma-ray axis.
Re: The "interesting" number ...
If the gamma flux in significant it doesn't matter that only one hemisphere of the Earth is exposed.
The danger is not radiation sickness. It's bulk ionisation of the atmosphere. Break down a significant percentage of the oxygen and nitrogen molecules, and they'll recombine into Nitrogen Oxides by the megatonne. Cue (a) instant destruction of the ozone layer and (b) decades of Nitric Acid rain.
Land life is the most vulnerable to these. The oceans are a very large sink, so life in the deep ocean has the best chance.
It's not very likely, though it fits the fossil pattern of one of the mass extinctions as well as anything else. One thing for sure, we wouldn't see it coming.
Re: 10-bit multiplexed optical
Optical wavelength demultiplexing ought to be pretty straightforward. You use a prism or a grating. I'm not an engineer but I suspect the demultiplexer is the least of the problems!
The problem is that the same mechanism that separates wavelengths in the prism causes dispersion of signals in the fiber. At best the various optical carriers will get time-skewed in transit and that has to be compensated for. That's something that will vary with the temperature of the fibre.
At worst, dispersion in the fibre will scramble the data modulated onto the optical carriers. If that's not a killer you have to make modulators and a multiplexor and a coupler. Rather them than me.
It's far easier to transmit 40 packets in parallel down 40 fibres, than to try to make a 400Gbps single channel. Which makes me wonder, why is a 400Gbps single channel needed at all? c.f. one 400GHz CPU -- is that physicaly possible -- compared to the 1000 400MHz cores that you might find in a GPGPU.
Anyone else pondering what might be labelled 802.3BT and 802.3bu ?
Re: No nukes!
1970? Don't you mean pre-1870 levels? Or maybe pre-1070 levels?
Actually, if the world put all the resources it devotes to warmaking ("defense") into building massive solar plants in the Earth's most barren deserts, we could support current populations with completely renewable energy. Covering a mere hundredth of the Sahara desert alone would generate all the electricity that mankind uses today. Cover a few more percent to generate electricity in place of fossil-fuelled transportation and heating. The only thing that we'd have to completely give up is air travel. Long-distance ocean travel would become expensive or (and?) as impossible as the winds to timetable.
BTW the area that would need to be covered is about the same as the area of the planet that is already covered by roofs.
Re: New Heads
Not my experience. Mine is still on its original (starter-sized) cyan cartridge, many months, many reams and a lot of black-only printing later. I'd second the comment that there's somethiong wrong with it. Or ... you don't turn it off when you're not using it, do you? At the wall socket, rather than by using the off button? That's a really bad idea.