1564 posts • joined Wednesday 10th June 2009 11:28 GMT
... or manipulated
Worse, you could take the ENF signal for any time in the past and superpose that onto a recording in order to give it a fake "provenance". As you said, play the original back through speakers from battery-operated kit, also record with battery-operated kit, and mix the fake ENF signal at a level that will drown out any faint interference that your (well-screened) recorder might be picking up.
Make sure you know what happens if a small (one-bit? one-block?) error develops in your [GTP]bytes of encrypted backup media. Do you lose one bit ot one block when you restore? Or does the whole darned thing become un-decypherable and therefore useless?
This backup has had its pin pulled and will self-destruct ten minutes before you need it. (Schrodinger's cat would be a better icon. Backups are simultaneously live and dead and you don't know which until you try to restore them)
I can see both sides of the argument on this one. I suffer from high blood pressure for which I take medication. Were I to arrive in a hospital unconscious and in need of emergency surgery, I would prefer the operating theatre staff to know about my medication. So having an SCR may help.
Also there's nothing in my medical history that I'd be worried about, should it fall into the hands of a data-thief. No grounds for blackmail, nor even embarassment.
What I don't get, is why an SCR cannot be deleted (or at least voided of content) at any time in the future, on request by the patient. If this were the case, my nagging doubts would be assuaged.
I was dead against ID cards because of the nature of the data that was going to be stored -- everything an ID thief could possibly want to know -- and because of the criminalisation of anyoune who failed to tell the state whenever anything that they wanted to know had changed. There are doubtless a few people who feel the same way about their medical history, because it begs questions about their lifestyle or suitability for employment or insureability. But for the rest of us ... am I being hopelessly naive? What should I be worrying about?
Sulphuric acid containment
Concentrated (not fuming) sulphuric acid will remain quite happily contained in a glass bottle for as long as the glass lasts. Plenty of other things it won't eat. The reaction with cellulose / paper is quite subdued. My chemistry teacher demonstrated the danger of conc sulphuric by pouring some onto a paper towel (in a glass basin). It gently dissolved into black slime, no SO2 or other fumes that I remember. I think it just extracts H2O from cellulose, leaving mostly carbon. (Cellulose, Sugar are carbo-hydrates, i.e. hydrated carbon).
He also showed that provided your skin is dry and you immediately wash off a splash of the acid with copious supplies of cold water, it won't harm you ... by demonstrating this using his own hand.
Fuming Sulphuric acid (H2S2O7) is rather more nightmarish.
(I refuse to bow to Yank spelling - the only word uk the English language that ends in -ize should be "americanize")
Why no dye bomb?
I still don't understand why cash dispensers are the least bit attractive to thieves.
Surely they should be designed with a large dye-bomb inside, that goes off should a cable connecting the cash dispenser to the foundations of the building be cut. Banknotes saturated with dye are pretty much impossible to spend, so after word got out, thieves would leave all cash-dispensers alone.
In fact inside a cash-dispenser, it' would probably be safe to use concentrated sulphuric acid instead of dye, which would turn banknotes into acid-charcoal slurry.
Bright sunshine stops reader
1. Openness. I want to be sure I can always read my book, or lend it or sell it on to or give it to someone else.
2. Water (and salt and food and sand) tolerance of a paper book is superior to that of any electronic device I know.
3. Books don't have battery-life issues
4. Books reliably last decades (centuries if printed on acid-free paper).
5. Less hassles at airport security with a paper book, and no risk that it might be infected with a virus or hidden content or have its visible content altered.
6. You can still read a damaged paper book (and mend it with sticky tape).
7. Ipad or any other display I've seen is not comfortable to read in bright sun. E-paper (as in Kindle) an exception, but lacks colour and mouse-clickability.
Non-fails: I find a book created as, say, a pdf file with hyperlinked index is slightly better for non-linear access than a paper book (just as long as I have the appropriate means to read it to hand). Annotation *ought* to be a small matter of programming.
Ever heard of a single system image?
We don't need WSUS or anything like it on LInux. It can run from a single system image. Linux can run either as a disk-less workstation with the one system image on a server, or with a hard disk acting as a cache of the server's master.
Either way, update the master, and the workstations look after themselves.
You can't do this with MS Windoze, because every instance of Windoze insists of writing to itself and making itself different to any other instance. This makes it somewhat harder to make unauthorized copies: a benefit to Microsoft, a large dis-benefit to end-users.
Rubber grommets better than tonnes of iron?
Some quiet PC enclosures have vibration isolation - rubber grommets or springs - on the disk mounts, to prevent the noise of the disk drive coupling into the case and causing acoustic annoyance. Such isolation must also work in the other direction, and attenuate any forced vibration of the disk drive by the chassis. Some benchmarking please. Are quiet PCs also faster PCs?
Anyway, if drives being vibrated by their chassis is a problem, it's surely a much better solution to float each drive on vibration-deadening rubber mounts, than spending a fortune on heavyweight ironmongery.
The thing that I know does cause systems to slow down is being too warm (or cold). A drive outside its manufacturer's recommended operating temperature range may have a shortened life expectancy, but definitely suffers degraded seek times while it is operating outside spec.
Can I yet buy a CD jukebox?
With cheap Terabyte disks, it ought to be possible to buy a box into which I can read all my CDs to save shelf space, and then play them back in their original high fidelity.
I know of several that would convert my hi-fi CDs to lower-fi MP3 files. No thanks. Lossless compression or no encoding are the only two options acceptable to me.
In passing, controlling such a device and the PVR/TV/DVD stack, would be good reasons for purchasing a tablet computer. If they made these AV universally network-able and controllable with a web browser, that is.
If you ask a bunch of people who have developed brain cancer about their mobile phone usage over the previous several years, they will of course tend to over-estimate. The control group, without brain cancer, may well under-estimate. The resulting bias could easily invalidate the study to the extent that it looks as if mobiles protect one against brain cancer!
Then there's the issue of dosage. Depending on *where* you use your mobile, it may be transmitting at two watts (one bar reception) or two milliwatts (four bars). It's pretty obvious to me that if there is a risk, it will be to the folks who make heavy use of their mobiles in places with bad reception. Are they able to allow for that in these studies? I doubt it.
I suspect that the mobile companies actually have the data to do a definitive study. Their location data may well even allow for reasonably accurate estimation of transmission power for each call. But put together commercial self-interest and data privacy laws, and will they hand over their data? Barring specific legislation, not a chance.
Finally, the obvious. There's no epidemic of brain cancer out there. The risk, if non-zero, is small. If you are paranoid, look at your signal-strength indicator and don't make or take calls when it's poor. Otherwise, just watch out for buses -- probably a greater risk than mobiles if you are talking on your mobile while you cross the road!
Hidden in plain sight?
There is always the possibility that it is not what it at first sight appears, that it is in fact a steganographically concealed or prearranged signal to agent(s) unknown. The fact that it has been sent to untold millions of others is of course cover for the agents.
So it could be quite clever, not at all stupidous.
Silione not epoxy
Silicone bathtub sealant, £3-ish for a tube at any DIY store.
If you just have an image of a fingerprint you'll also need an appropriate means to transfer it onto celluloid (or other transparent substrate) by photography or computer printer, and a PCB kit (contact-print the picture onto the photo-resist coated PCB then etch it with ferric chloride). A PCB kit is a few quid at any amateur electronics outlet.
No, I've never tried. It's so bloody obvious it'll work I don't need to.
This is one of numerous reasons I oppose a national fingerprint database. The criminals will steal fingerprints out of it, make silicone copies, leave random dabs around all over crime scenes. Do you have an alibi? After enough random innocents have been incarcerated then (mostly) freed on appeal, fingerprint evidence will have been wholly discredited in criminal proceedings. Exactly what the bad guys want. They're probably funding the lobbying for compulsory ID.
"Some people don't want servers, even if they need them".
Or, they've worked out that "entry-level server" means sluggish PC packed with industry-incompatible hardware that's supposed to be more reliable, but which in practice is guaranteed to break down a few days after the warranty runs out, and which then cannot be repaired for less han the cost of a new entry-level server, and a ten-day wait for the spare part. Oh yes, and an extra £500 up front for the privilege. And extra-noisy fans.
Better to buy a good industry-standard desktop system with twin RAID-1-able disks and call it your server. With the cash you've saved you could buy another one and keep it a cupboard as your cold fail-over. Or just grab a spare part out of the office junior's desktop should you ever need it .
They'd like you to think that what you've just read is highly technical content. (The scary thing is that for so many people, it is).
> The six were then tasked with creating a dynamic database to coordinate the spectrum uses of at least 20 separate emergency service groups in an apocalyptic urban setting. The database was required to sense users, and deduce transmitter locations as well the as signalling systems used, identifying available frequencies for allocation to new arrivals and working out the potential for interference based on both the frequencies and the manner in which they are used.
Tell them that all they have is a hammer, and the problem has to look like a nail.
Wasn't the original design brief for the internet that it survive a nuclear war? Pretty much the same scenario.
I'd envisage a decentralized and self-organising cellular network. Plane-loads of solar-powered base stations, every one programmed to establish communications with its neighbours, create their own network maps, and to service any compatible handsets that arrive. You could have the network up and running within a few hours, parachuting the base stations from planes (or helicopters). Local hotspots without enough bandwidth? Same as mobiles - parachute in more base-stations, the cells automagically get smaller.
Hard to do if access permissions and communications privacy are issues, but in this disaster-response scenario they aren't. (And I thought that the military had already got something like this *with* security, for battlefield and/or post-EMP communications).
Of course, someone has to do the design work now, and stockpile the things in advance. Which they haven't done. Perhaps the problem will look like a nail after all.
Go in and take it?
Yes and no.
With a physical resource, such as an oilfileld, to go in and take it means war, conquering the territory. With pure know-how, at most all you need is one successful spy, or one defector. Often simply knowing that something really *can* be done is a large percentage of what you need to duplicate it.
One should ponder for how long the USA was able to keep the USSR from acquiring A- and H-bombs and the associated technologies. Not very long at all, even back in the stone age of surveillance technology.
I really do hope that the Norks *have* somehow got fusion power working. Realistically, it's far more likely that Fulham will win the Europa cup. (This is posted the morning after they didn't).
BTW Anyone care to ponder whether an NK-type regime could survive inventing a limitless source of cheap/free non-explosive energy? I expect that if they tried to uilize it, they'd inevitably sow the seeds of their own rapid demise. The Spanish once found a a near-infinite source of money (gold, South America). This did not advance their empire. It doomed it.
Cheap and simple
Store all data printed on the passport in digital form within the passport. Store a crypto-checksum of that digital data in a passport verification database. Passports can then be verified. To the extent that a passport-forger has not obtained write access to the master checksum database, no faked passport will pass verification. What more is needed?
Since there's no personal information stored in the verification database there are no security issues. The verification database can be made public- just a list of passport numbers and their checksums, not even our names need be in it.
How can losing all your data when a disk crashes be an improvement over RAID for a home user? (As opposed to a business user? You mean, home users WANT to risk all their data on a single drive? )
On Linux, I avoid RAID hardware and use software RAID (for 2- or 4-disk servers, simple mirrored disks rather than RAID-5). Why on earth can't WHS do anything like this? (Answer: perhaps because if it weren't a useless toy, it would eat into sales of expensive "proper" windows servers?).
Anyway, if it doesn't have redundancy to protect your data from one failed disk, it's less use than a chocolate teapot.
15 watts on standby?!
What on earth does it do with FIFTEEN WATTS while standing by? My old 1980s Phillips TV stands by on just three watts (which I regard as three too many).
We really need some EU-wide legislation on standby power usage, to force manufacturers to get standby power usage down to milliwatt levels. Hint: disconnect the switch-mode PSU *completely* from the mains, and run standby functions off a rechargeable battery which recharges every time you turn the set on.
Another defense mechanism
No-one has mentioned H G Wells "The war of the Worlds". I suspect that should biological aliens arrive on another planet with biology, there are only three possible outcomes, none good:
1. Their microbes overcome our immune systems and reduce the Earth's biosphere to goo.
2. Our microbes overcome their immune systems and reduce the invaders to goo. Their home planet likewise, if any make it back home.
3. Both of the above, followed by a very long war (hundreds of millions of years, or billions) while two competing microbial biosystems evolove their way to victory or a peace treaty (symbiosis).
But of course, the real universe appears to have a speed-of-light limit. Perhaps we should be thankful for that. I suspect interstellar travel has to wait until biological life works out how to upload itself into robotic bodies. At that point they can go exploring, by slowing their clocks down enough to make interstellar journeys tolerably short in subjective time.
Post-biological life plausibly poses no threat to us, because it will prefer vacuum (almost all the universe) to nasty corrosive biospheres (a negligibly small part), and the tops of gravity wells to the bottoms. It might even be here already, if it's ethical enough to leave primitive bio-life alone and just watch our evolution quietly from the comfort of the asteroid belt!
The nasty alternative -- exponential growth, conversion of every solar system it reaches into smart matter, etc. -- can probably be ruled out in this galactic heighbourhood by astronomical observation. We'd have noticed mature stars surrounded by smart-matter dust clouds that should not be there, and most especially a patch of all-atypical stars characteristically different from the rest of the galaxy.
The reference is linked in my post - the wiki one about Laki.
It's an estimate of the number killed immediately by SO2 and HF inhalation. The following year was the "Year without a summer", and the widespread famine claimed many more. It's not certain that Laki was the sole cause thereof, but it can't have helped.
You can see it
... or I think you can. The blue sky outside my window is a very pale milky blue, not the usual sky blue. Something is scattering more light than usual. Sunset may be quite something, if the real (wet) clouds stay away.
It's a very thin cloud, but what it's made of is highly abrasive. You really don't want a jet engine chew on a hundred miles' worth of it.
Probably not Thor.
The Greeks had a god of volcanoes, Hephaestus by name.
There doesn't appear to be a god of volcahoes in the Norse pantheon, nor even a god of fire. Perhaps they sub-contracted the work (which might explain a lot). As might Loki's involvement.
(And/or read Gaiman's "American Gods")
Don't jest about Icelandic volcanoes
Mother nature in Iceland is a hellish bitch. One should hope that she stays asleep during our lifetimes (this erruption is the merest twitch).
1783: 20% of the Icelandic population killed. 20,000 killed in the UK (which back then had a population of a few million). Major climatological consequences in both Europe and the USA.
It's not like leaves on the line, it's more like ignoring the possibility of fallen trees on the line. But even deadlier. Do you want to risk being in a plane without any working engines?
A cloud of volcanic ash is not easily visible like a thundercloud, so the pilot can't just look out of the window and know whether under / over / around is possible. The best case forgetting it wrong is overheated and damaged engines that cost the airline huge amounts of money to repair (or scrap). The worst case is that the plane becomes a rather poor glider and has to ditch.
Read up about the BA jumbo that very nearly crashed when it flew into a cloud of volcanic ash that the pilots did not know was there. (A new erruption, and back in the days before there was a global monitoring network for this hazard). The engines were total write-off. That the plane managed to land was a near-miracle. At low altitude (over the ocean!) the plane had dropped into clean air and the pilots managed to re-start some engines and limp to the nearest airport.
Registration not compulsory
I'll worry if you ever have to hand over your ID before you can get an Oystercard.
At present you can buy one for cash from a machine, and top it up with cash. So if you want to travel anonymously, you can. I even spotted that the need for anonymous travel was recognized by TfL in a document I once found on their web-site.
It's the Labour flavour of UK government that might have other IDeas about your privacy. There's still hope. The Tory manifesto pledges to abolish ID cards and the national ID database.
Another reason it's a bad idea.
As soon as stop-on-request is implemented, some low-life will request that the bus stops in an ill-lit place away from any CCTV cameras, at which point a mob of masked criminal associates will storm onto the bus, rob all the passengers, and disappear into the dark.
This is of course one of the reasons that no sane person stops for hitch-hikers any more, not even vulnerable-looking female ones (or even, especially not for vulnerable-looking female ones).
"not that Londoners love it".
That's a bit harsh. It's hard to love something that exists to take one's money for the purpose of paying for transport. But that fundamental aside, it's a darned sight more convenient than the paper tickets it replaced. It would be even more useful if it could be used as an instant cash substitute for coffees, sandwiches, confectionery etc.
For accuracy, there is a choice - paper tickets still exist. However, they do cost more. Better to invest in a spare anonymous Oyster cashcard (all of £3, refundable) should you ever make journeys that you don't want Big Brother to log to your ID. I keep a couple lying around for a different reason - for use by friends and family visiting me in London.
There's very little to distinguish Labour from Tories on the old, dead left-right apolitical axis.
What we might see here, is the opening up of some very clear differences between the two on the ever more important Libertarian - Authoritarian axis. Labour want everything regulated and controlled by the dead hand of government. Perhaps the Tories really don't.
I'm not cynical enough to dismiss these ideas out od hand as just more politicians promises. Even if they let us down on some specifics, they'll have my qualified support just as long as they really do act to get government off our backs.
(Oddly?) you can't insist on this. The definition of legal tender includes definitions of reasonable quantities of coins - try to pay a £50 bill in pennies, and the person you are offering them to can say that 5,000 pennies is not legal tender and refuse to accept them.
It couldn't have happened with VMS
Some may think this a small point, but other industries have realized the importance of intrinsically safe design, and over the decades and centuries they have pushed unsafe designs onto the scrap-heap. The computer industry has a long way to go -- in many areas we don't even know what intrinsically safe really means.
But in the namespace of a filesystem, allowing special shell characters and control codes as part of filenames is intrinsically very unsafe. A filename ought to be a string with a defined maximum length, and each byte restricted to a set of non-special characters (typically 0-9, A-Z,a-z, underscore and hyphen).
Unix has cursed the world with a few serious mistakes, and unrestricted strings of bytes as filenames is one of them.
Better than 18%
You can buy 18%-effficient panels to go on your roof today. The gap between best and cheapest will narrow for solar cells, just as it has for CPUs.
For light weight, one wants a thin film solar panel, rather than thick(ish) slices of silicon assembled into an array. Then integrate the thin film into the flight surfaces of the UAV. You can probably do that with CdTe or CIGS, and the technology of thin-film solar cells is rapidly advancing.
It might not be the end of the world if one could not do stratospheric position-holding, though it would require some diplomatic effort to allow a large number of high-altitude unmanned communications platforms to "orbit" the planet in the stratosphere. Manouvering ability sufficient to avoid being blown over a few paranoid states like North Korea might suffice, if China, Russia, the major emerging economies and the West agreed to allow a worldwide UAV communications system.
Air is much thinner at high altitude - doesn't that reduce the amount of power needed to fight a headwind?
Seems a bit hard
It's a fact of life that things sometimes go wrong in batches. I always regard the manufacturer's response to the problem as far more important than the fact that you ran into a problem, unless the problems are continuous for much longer than it ought to take to fix them.
It's been two years since anything I ordered from Cruicial failed, and two years ago their response was all one could ask for. No paperwork or paper-chase, my replacement RAM arrived the day after letting them know that my memory had gone bad.
I completely agree with the above, re data rate and latency.
It's a shame that MS OSes are so bloated, and designed so it's hard to make a hard separation between the (read-mostly) software and the (frequently rewritten, bulkier) user data. Linux (everything except /home) fits easily into 32Gb, 16Gb is enough for most. It's a shame that no-one is making a small and really cheap SSD.
Left - Right is dead
Whether you support Labour or the Tories, they're both clearly in favour of authoritarian big government, and there's really not a lot else to choose between them. That's the message that the Tories have just sent us.
The new political axis is authoritarian / libertarian. What this country desperately needs is a truly libertarian party, and for it to be elected while we still have some vestiges of democratic government to save. Leave the current political parties to continue down their chosen road for another couple of decades, and we won't.
Definitely. Replace the human pilot with a robot and a bunch of comms gear, get the endurance up from days to months, and you have a cheap and quasi-stationary replacement for satellites to bring 21st-century communications to rural areas. (They'd need to increase the cruising altitude, but with no human pilot that might not be too hard).
Actually, better than satellites, for which speed-of-light latency is a nuisance or worse.
You might care to ponder how many "essentials" of a modern car were invented and developed for racing or rallying, and might never have been developed at all if motor-sports had not been pushing at the envelope.
Don't know what it's cruising altitude will be, but 10,000 feet puts you above most of the thick stuff over low-altitude land, and light high overcast still lets plenty of light through for solar cells (which are happy with diffuse illumination).
10,000 feet is also low enough that one can breathe comfortably without pressurisation.
I know it's a real problem with a real BT installation, but if this line was not added by the Reg for comic effect, it's proof that the gods have a sense of humour
A blaze at Burne House in North Paddington was reported this morning.
Next, a report from BT that they have suffered a second whammy because their national emergency backup centre at Loudwater was flooded early this morning.
We can (almost) all walk and chew gum at the same time. Most can walk and think (or converse) at the same time. But more than a few of us have had the experience that while thinking hard about one thing, our feet have taken us along the path of habit, rather than the one intended.
Some activities are largely or exclusively trained reflexes. Walking is one such: conscious input is needed only to set the destination, if it's a route that you've travelled very many times. I suspect that for some people more than others, driving is another such activity.
An interesting proof of how this works can be offered by physiotherapists. An injury may train you to walk or run differently. When the injury has fully healed, one's reflexes may stay differently-trained. A physio's job may be to provide conscious input and/or to devise exercises to force a patient's reflexes back to the more efficient "normal" pattern, away from the ones "trained" by the injury.
So, do "supertaskers" have an above-average ability (or tendency) to delegate routine matters to their subconscious, which routinely looks after many things simultaneously?
And the other 6%?
Have they considered the six percent who won't be able to receive DAB? (By their own figures).
It would be bad enough if these people were evenly spread across the country, but they won't be. They'll be concentrated in sparsely populated rural parts. In certain MPs constituencies, they'll be a majority. About time to start raising awareness of this issue amongst these MPs, so that they can't say that they didn't know?
BTW, I've tried DAB in a car, and it simply doesn't work. By that I mean it cannot handle driving through patches of bad radio quality with sufficient grace to be listen-able. So as well as rural constituents, there will be a huge backlash if the FM service is ever turned off. Better to start by going back to the drawing board, to invent a more robust digital transmission format for transmitting to moving vehicles.
With thousands of ID issuing stations all over the UK, what's the probability that at least one will end up being run by organised crime to issue bogus IDs to people who shouldn't be in the country? Or worse still, to people who would like to "prove" that the are other people?
I'd say about 90%. The other 10% is that they find some other way to beat the system.
I will not be voting Labour. I just hope that the other lot keep thir word to kill this insane scheme.
Not really what I'd call a fake CPU
It's not really a fake CPU because it doesn't work at all. It's just a criminal scam to defraud a distributor.
What would be a fake CPU, would be if someone was scraping the product ID off a cheap CPU and relabelling it as an expensive one, then selling that to unsuspecting customers in fake packaging. If the customer never checked the BIOS, they might never notice that the reason their i7-970 was disappointing was because it was actually a -920.
Anyone remember a few years back when organised crime relabelled a huge bunch of cheap electrolytic capacitors as the expensive high-performance ones for use in CPU voltage regulation circuitry? They worked for 2-3 years before leaking brown corrosive gunk, at which time the motherboard died. The criminals were long gone before the manufacturers spotted the problem. One estimate was that 50 million mobos / PCs went to an early grave.
What do you do when you want to check back to an old e-mail and you don't have access to your client?
What is your client? Your desktop at work? A notebook? The netbook you use when your partner is using the serious computer? A cybercafe you are using because your notebook has broken down while you're 300 or 3000 miles from home? Do you reboot into Linux/Windows to read your mail because your client (where the mail is organised) runs on Windows/Linux? And so on.
I regularly access my mail using Thunderbird from several different computers under three different O/Ses, and have occasionally accessed from quite a few more. I use Thunderbird out of choice, falling back on webmail services when Thunderbird isn't available. In all cases I see the same folder structure. Personally having my mail universally accessible and organised is far more importnat than having any particular client.
Organising my e-mail is very definitely a server-side activity!
Why no dye bomb?
Will someone please tell me why cash machines do not contain a dye bomb, prevented from release by a cable attached to the building? This has long been a feature of attache cases containing bearer documents or cash, attached to the courier's wrist. Snatch the case, and both contents and snatchers are instantly soaked with indelible violet dye.
After a few raiders discovered the hard way that all you get is un-spendable purple-stained banknotes, a bill for new clothes, and a need to stay out of the public eye until their purple-dyed skin is shed, then no-one would ever bother a cash-machine again.
What have I missed?
Anyone else thinking "Rampant Rabbit"?
Given two caveats, the answer is very simple. They never come here because it would take them too long to get here.
Caveat 1. We are right about special relativity, and there are no get-out clauses (warp drives, usable wormholes, etc.) They get here at a smallish fraction of the speed of light, or not at all.
Caveat 2. Their idea of a long time is similar to ours. Chemistry is universal, which may mean that any workable biology runs at a similar rate to ours. There are get-outs we can't exclude, such as downloading their intelligence into a computer, and then clocking it five orders of magnitude more slowly to turn a 100,000-year journey into one year subjective.
But they aren't here, so either they can't do that, or they don't want to embark on a one-way journey with no possible return.
@zef: if life on Earth is the aliens' Von Neumann machines, we should start looking for a coded message in our DNA. Most especially, in the parts of our DNA that are common to all known forms of life.
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