Oh! Now I understand why the guy on the home shopping channel always tells me how much money I can save with their stuff!
Euro notes are made of cotton, so they're not that different in that respect, I think. But even the smallest denomination has special FX ink on it, I wouldn't know where to get ink like that for inkjet printers.
Mmm rumor has it such "watermarks" are already part of every printer shipped.
But surely not professional eqipment of graphics studios? Wouldn't that interfere with their own digital watermarks they include to track their IP, so they wouldn notice it instantly?
A cheap little printer is not a big expensive copying machine. When you buy one at a store, your identity wouldn't be recorded, and you'd just get rid of it after you're done with your illegal activity. If anyone finds the digital watermark on a printout, that trace won't lead them anywhere. They'd just find out the brand and model of the printer; so what? "We should ban Epsons, beacuse most crooks use them!" Yeah, right.
I know the French franc, prior to the Euro, used different sized paper for different values.
In fact every European currency I ever handled has this property, IIRC, including, of course, the euro.
Is current consumer printer ink so good already that it doesn't smear if you just touch it with a sweaty hand? Or do counterfeiters that use 'normal' printers refill with another type of ink?
Put a dime in front of a visitor and ask him the worth of it. He can't. Nowhere does it say "ten cents" or "10 cents." It just say "One Dime."
The parent is right in saying 'the Euro money uses different sizes for different denominations' -- it's not just the currency called 'euro', it is true for every European currency I recall handling. No one over here would ever consider making all notes the same size.
Still, I wonder how you get the ink out without damaging the paper? 'Washing out' won't work, that's for sure. Which chemicals are suitable?
In fairness, I was deeply impressed with myself when _I_ managed to trisect an angle...
Oh, please, if you want to denounce a comment as nonsense, at least read it beforehand, and try to understand it, okay? I was, of course, talking about classical Euclidean geometric constructions, which I clearly stated. It is impossible to trisect an angle that way. You didn't do that.
However, I discovered [...] that trisecting a right angle using origami is not particularly difficult...
Trisecting any angle using origami is extremely easy, any kid could do it.
However, this sadly does not a geometrical construction construe.
Of course it doesn't! I compared origami to geometrical constructions, implicitly stating that these are different things.
Finally, you mention a marked ruler: these do not help
This sentence makes me wonder if you are trolling or if you are a borderline functional illiterate. I mentioned a marked ruler in the context of pointing out -- to less mathematically inclined people who might not know that -- that a straightedge is not a marked ruler. This makes all the difference, since you can trisect an arbitrary angle using a ruler (so you're not quite right where you say "these do not help"), but this is not an Euclidean construction.
I use the term loosly, but/. is a news site, and by definition, news has already happened.
That's one of several definitions, and it would be a big mistake if such a definition (e.g.: 'a report of recent events') was the only one slashdot posters would use to interpret their mission statement. You could also say, as slashdot is a news site, everything they report is news. Even if it's about something that hasn't happened yet.
News is also, by definition, everything that is newsworthy.
it might also be a novel idea if people who are interested in such phenomina [sic] would actually go to sites that specialize in these events and look at there [sic] calender.
I became interested in the opportunity of seeing the shadow of Mercury in front of the sun the moment I read this posting. Previously, I didn't know that this opportunity existed. If everyone knew about everything he finds interesting and about the appropriate specialised sites, no one would be reading/. finding out about sources of interesting information is the whole point of/..
Oh dear, two sentences in your posting, and both of them totally idiotic. I fthe ppl who moderated this 'interesting' and 'insightful' are still around, please tell me the reasoning behind your moderation, I don't understand it.
And hopefully they'll post the story just as timely next year.
origami mathematics
on
Origami and Math
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· Score: 4, Interesting
while it's impossible to solve cube duplication or trisection of an arbitrary angle using just a straightedge (not a marked ruler) and a compass, it can be accomplished utilizing origami. there are a number of recent very powerful results in origami mathematics. i wonder if you could take a sheet of paper and fold together the quadrature of the circle.
Think back 20 years.. In 1983 you may have had an Apple IIe, TRS-80 Model III, or C64.. If you did save video then for that platform on a media that would oxidize over time (DVD's have a shelf life too), what are the chances of having working hardware to view it with?
You don't need the actual ancient hardware, just an emulator. C64 emulators are available for a wide range of platforms, and I'm sure you can also find emulators for the other machines you mentioned. If there's really neither a current DivX player, nor a computer able to run an old DivX player in 20 years, there still will be an emulator for x86 hardware. Take Bochs, it does just this, and is pretty portable. (Note: Virtualization software like VirtualPC is something different, it requires an x86 machine to run.) Bochs emulation on my PC is way too slow to run a DivX player, but in 20 years it'll be just fine.
So its a fancy, wireless enabled compact flash card? Is that the best you can do?
Obviously, you completely forgot that this thing also has a more powerful processor than even newest PDAs. You also forgot that it's in fact meant to be a better replacement for PDAs, which makes sense. With some I/O device, it can do everything a PDA can do for you, plus lots more, because it has more processing power, more storage space and more wireless connectivity. The big deal is that it's 'headless', which the creators think of as a feature, because this thing is teeny tiny small, and you have lots of different options for interfacing with it (wireless headset, phone, PC, thin clients like public web surfing stations, special hardware like glasses with tiny projectors and fold-up keyboards,...).
What you also didn't get is that what I said above was just a response to the parent posting, the first reason that came to my mind why SSHing to your home box would not always be a better option.
You should really learn to _read_. And practice _understanding_ what you read.
Can you stream a DVD quality video from your home box to any place in the world and get a nice picture over VNC? At a reasonable price for the bandwidth? No. This type of device should appeal to the same kind of people who like to have an iPod. Which are, I'm told, a lot.
Of course it's inconvenient if you have to use 'another big machine' to access the device, but that's not a limitation of this device, it's a limitation of other devices if they can't access this server. Imagine having a bluetooth-enabled phone; this already has a little screen and keyboard (or touchscreen). You'll be able to attach a headset and control an MP3-player with voice commands. You'll be able to put a part of your MP3 collection in a 'shared folder', so other people on your bus can also check out your collection, while you listen to theirs and swap some files. And this is not restricted to music...
Oh dear, we'll see more people wanking in the last row of busses again, eek...
You're right, I must've thought of something else. Audio CDs do have error detection and error correction codes, just like CD-ROMs. However, their size is nowhere near the size of the 'user data' within a frame, so that's one more reason why doubling capacity by ditching error correction and detection bits is absolutely impossible.
with all the spam coming in about why size does matter, am i the only one who read something like 'are the size of a penis (/penile?) tip' on the first pass?
to my surprise, i found out (too late, argh) that the news artivle mentioned [http://zdnet.com.com/2100-1103-997817.html] goes into grater detail than the comapany's site itself and nicely explains how the physical density was increased.
just go along, there's nothing to see here. the parent's seemingly long, elaborate advice is absolutely wrong.
the linked text doesn't say how it works exactly, but it says this technology can _double_ the capacity, which you can't do just with using the error correction bits. On a 650 MB CD, you roughly have 100 MB of error correction. you can easily calculate that by comparing with an audio CD, which has no error correction. 650 MB media equal 74 minutes audio media, which is a certain number of seconds of two tracks of 16 bits each at 44100 samples a second.
the second clue is that you can make DVD drives compatible by updating the firmware, but not CD drives. what they changed is really the _physical_ density. this is obviously not about dropping error correction.
Give me a reason why I should try out your crypto and bignum toolkits, which are still buggy as it seems, instead of using older, more proven toolkits, and I'll do it and give you feedback. What exatly are the advantages of your software?
Don't waste your time with this Inquirer story (as I just did), it was rejected four times for a very good reason: It doesn't contain any interesting facts. The author believed to have detected indications that should make you suspicious about Opera's privacy policy and its practical implementation. However, he couldn't verify anything. The article is just a long rant that digressed into the totally irrelevant several times.
Oh, wait a moment, you're reading responses to a dupe, you're already wasting your time...
and you are assuming that everyone with 2+ computers on a broadband connection is using more bandwidth then a person with one computer.
No, I am not at all. I am merely assuming that an ISP that supports larger and more complex setups will face higher costs than an ISP that only supports small and simple setups on the end of their lines. For the ISP, it's the bottom line that matters, their average customers, and not isolated cases of geeks that connect a dozen machines, only do a little telnet on all of them and don't need any support at all. I don't only have a logical leg to stand on, I also have a heuristic leg and a statistical leg.
if they can't or DON't want to deliver the bandwidth they advertise then STOP ADVERTISING IT.
This argument is ridiculous. Of course an ISP has to deliver all the bandwidth that your contract says you should get. But that doesn't mean they should plan for an event in which all users want all their bandwidth simultaneusly. (There are service providers that do this and even install redundant connections to the customer's place, hook up to several backbones and so on, in order to guarantee maximum reliability. As I already said, those are _much_ more expensive and _not_ for home users.) This would be equally insane as a bank that plans for an event in which all customers enter one branch office simultaneously, cancel their accounts and demand all their money in cash. If that really happened, would you really blame the bank for not having every single penny lying around in cash? Ridiculous.
I am curious as to how this differs from the cable companies trying to limit the number of TV's you could have plugged in to cable, or the phone company telling you how many phone extensions you could install?
I never ever saw a pricing scheme in which a cable company would sell you additional connections for additional TVs. They just sell you connectors and amps for additional devices and don't let you plug in an unlimited number of devices into a single socket, because that would degrade the signal's quality for other users. Electrical resistance and stuff, you know. For phone extensions, on the other hand, applicable arguments are similar to the ISP story. Which also is an area in which you're not so very much in touch with reality, as we've already seen.
There are no additional costs. [...] You can only suck so much down on a broadband connection at a time.
You're assuming here that every customer is maxing out his/her bandwith all the time, as if every customer had a P2P client running all the time and enough active downloads that more data is available than he/she can suck down. However, this is not the reality, hence this is not how ISPs calculate their fees. If they did calculate their fees that way, their service would be much more expensive. Just compare with enterprise-level ISPs that sell 24/7 _guaranteed_ bandwidth. So, ISPs are saving costs because their users don't use all that bandwidth -- and this is even true if they charge for the MegaByte instead of a flatt fee! More users means making more use of the available bandwith, means more costs.
If the service contract says one IP, one system, they're not going to help you solve problems with your network.
A reasonable contract says one system at a time, they'll let you upgrade your PC, they'll let you run different operating systems, they'll most likely let you plug in your laptop you took home from work. Now if you have trouble setting up the connection on any system, they should help you even if they helped you before with another system.
Slashdot Mirror
Oh! Now I understand why the guy on the home shopping channel always tells me how much money I can save with their stuff! Euro notes are made of cotton, so they're not that different in that respect, I think. But even the smallest denomination has special FX ink on it, I wouldn't know where to get ink like that for inkjet printers.
A cheap little printer is not a big expensive copying machine. When you buy one at a store, your identity wouldn't be recorded, and you'd just get rid of it after you're done with your illegal activity. If anyone finds the digital watermark on a printout, that trace won't lead them anywhere. They'd just find out the brand and model of the printer; so what? "We should ban Epsons, beacuse most crooks use them!" Yeah, right.
Is current consumer printer ink so good already that it doesn't smear if you just touch it with a sweaty hand? Or do counterfeiters that use 'normal' printers refill with another type of ink? For real? No shit? Wow.
The parent is right in saying 'the Euro money uses different sizes for different denominations' -- it's not just the currency called 'euro', it is true for every European currency I recall handling. No one over here would ever consider making all notes the same size.
Still, I wonder how you get the ink out without damaging the paper? 'Washing out' won't work, that's for sure. Which chemicals are suitable?
News is also, by definition, everything that is newsworthy. I became interested in the opportunity of seeing the shadow of Mercury in front of the sun the moment I read this posting. Previously, I didn't know that this opportunity existed. If everyone knew about everything he finds interesting and about the appropriate specialised sites, no one would be reading
Oh dear, two sentences in your posting, and both of them totally idiotic. I fthe ppl who moderated this 'interesting' and 'insightful' are still around, please tell me the reasoning behind your moderation, I don't understand it.
And hopefully they'll post the story just as timely next year.
while it's impossible to solve cube duplication or trisection of an arbitrary angle using just a straightedge (not a marked ruler) and a compass, it can be accomplished utilizing origami. there are a number of recent very powerful results in origami mathematics. i wonder if you could take a sheet of paper and fold together the quadrature of the circle.
What you also didn't get is that what I said above was just a response to the parent posting, the first reason that came to my mind why SSHing to your home box would not always be a better option.
You should really learn to _read_. And practice _understanding_ what you read.
Can you stream a DVD quality video from your home box to any place in the world and get a nice picture over VNC? At a reasonable price for the bandwidth? No. This type of device should appeal to the same kind of people who like to have an iPod. Which are, I'm told, a lot.
Of course it's inconvenient if you have to use 'another big machine' to access the device, but that's not a limitation of this device, it's a limitation of other devices if they can't access this server. Imagine having a bluetooth-enabled phone; this already has a little screen and keyboard (or touchscreen). You'll be able to attach a headset and control an MP3-player with voice commands. You'll be able to put a part of your MP3 collection in a 'shared folder', so other people on your bus can also check out your collection, while you listen to theirs and swap some files. And this is not restricted to music...
Oh dear, we'll see more people wanking in the last row of busses again, eek...
You're right, I must've thought of something else. Audio CDs do have error detection and error correction codes, just like CD-ROMs. However, their size is nowhere near the size of the 'user data' within a frame, so that's one more reason why doubling capacity by ditching error correction and detection bits is absolutely impossible.
to my surprise, i found out (too late, argh) that the news artivle mentioned [http://zdnet.com.com/2100-1103-997817.html] goes into grater detail than the comapany's site itself and nicely explains how the physical density was increased.
just go along, there's nothing to see here. the parent's seemingly long, elaborate advice is absolutely wrong.
the linked text doesn't say how it works exactly, but it says this technology can _double_ the capacity, which you can't do just with using the error correction bits. On a 650 MB CD, you roughly have 100 MB of error correction. you can easily calculate that by comparing with an audio CD, which has no error correction. 650 MB media equal 74 minutes audio media, which is a certain number of seconds of two tracks of 16 bits each at 44100 samples a second.
the second clue is that you can make DVD drives compatible by updating the firmware, but not CD drives. what they changed is really the _physical_ density. this is obviously not about dropping error correction.
But they're also très boing boing!
Give me a reason why I should try out your crypto and bignum toolkits, which are still buggy as it seems, instead of using older, more proven toolkits, and I'll do it and give you feedback. What exatly are the advantages of your software?
Don't waste your time with this Inquirer story (as I just did), it was rejected four times for a very good reason: It doesn't contain any interesting facts. The author believed to have detected indications that should make you suspicious about Opera's privacy policy and its practical implementation. However, he couldn't verify anything. The article is just a long rant that digressed into the totally irrelevant several times. Oh, wait a moment, you're reading responses to a dupe, you're already wasting your time...
it's Fabergé