The reason it seems unproblematic is that you think about the problem in regular Euclidean space. However, our universe is not Euclidean, it is (ignoring general relativity) Minkowski space. In Minkowski space, the ordering of events in spacetime is much harder to pin down. Sending a signal "faster than light" allows you to send signals back through time, causing paradoxes.
Try finding a good introduction to special relativity, it should have some thought experiments to further demonstrate how this works.
I think it's fair to assume that the researcher would read the original paper before publishing a reaction to it,
The original paper does not go into detail about the procedures, because it beyond the scope of the paper. You are supposed to go look these things up for yourself, and the person who wrote this paper very clearly didn't.
This is another easy-to-digest paper written by someone who doesn't have the first clue about what was actually done in the experiment, trying to explain it with undergrad physics. And the press jumps on each and every one of these, no matter how bad they are.
In this case, GPS clock synchronization to nanosecond levels is regularly done in meteorology, the relativistic effects are well known and compensated for, because it wouldn't work at all if they weren't, and the synchronization was confirmed by a non-GPS method.
Maybe you need to turn your mouse speed up. I find it much faster to bang the mouse pointer to the top of the screen than to try and hunt for a thin bar somewhere in the middle of the screen.
Probably because they didn't actually "move away from a conventional desktop interface", but then again that doesn't explain why the writer thinks they moved away from WIMP either, as they did no such thing.
Which means that the phrase "This decision-making is influenced only by technical factors, and nothing else" is a lie, so why say it in the first place?
No, it means they hadn't seen this trojan before now, genius. Nobody but the creators and the CCC had, before today.
Did you get this far down the thread without already noticing that Slashdot is dumb as toast nowadays? Nobody posting in this thread has even the tiniest sliver of a clue what they are talking about.
And if that liter volume is filled with pure water at 0 degrees Celsius (the temperature at which water freezes, but in the liquid rather than the solid state), and weigh that water, it weighs 1 kilogram.
This was the definition for about five or so years in the eighteenth century.
Which is definitely silly - the base unit is charge flow, and the derived unit is charge?
This is because we are better at measuring the effects of charge flow than of charge, and thus it is easier to find a unit definition based on it. Practicality.
But the lump of metal is located "somewhere" i.e. outside the U.S. So it can not be used.
Oh, you gravely underestimate the amount of work that goes into this system.
Every country has their own copy of the weight. Every now and then, they very, very carefully bring their own weight to Paris, and calibrate it against the weight that sits there. Then they equally carefully bring it back. Once it is back, more copies are manufactured locally, and sent out to institutions and industry who need it to calibrate their own equipment.
And so in the end, through many intermediate steps, your kitchen scales are calibrated against the single kilogram in Paris.
The definition of a unit must be physically instantiable. That is, you have to be able to use the definition to build a device or artifact that can be used to calibrate a meter for said unit. Otherwise, the unit is useless.
This means that some units still have cumbersome and strange definitions, as we do not have the technology to use the obvious definitions to calibrate measurement devices.
Slashdot Mirror
The good ones have better things to do than look at garbage papers on arXiv, I guess.
Except they confirmed the synchronization without using any satellites, so no.
They were using the GPS timing, but they also later confirmed it was working as expected by using a time-transfer device.
The reason it seems unproblematic is that you think about the problem in regular Euclidean space. However, our universe is not Euclidean, it is (ignoring general relativity) Minkowski space. In Minkowski space, the ordering of events in spacetime is much harder to pin down. Sending a signal "faster than light" allows you to send signals back through time, causing paradoxes.
Try finding a good introduction to special relativity, it should have some thought experiments to further demonstrate how this works.
That situation violates causality only for some definition of causality which is not useful.
What matters in causality is avoiding paradoxes. You cannot create a paradox using quantum entanglement, thus there is no problem.
The "on arXiv" part is pretty crucial. Papers there should not be taken seriously unless there is a compelling reason to trust the author.
No information can be transmitted, so causality is not violated.
Nope. They are travelling apart at slightly nearer c.
I think it's fair to assume that the researcher would read the original paper before publishing a reaction to it,
The original paper does not go into detail about the procedures, because it beyond the scope of the paper. You are supposed to go look these things up for yourself, and the person who wrote this paper very clearly didn't.
This is another easy-to-digest paper written by someone who doesn't have the first clue about what was actually done in the experiment, trying to explain it with undergrad physics. And the press jumps on each and every one of these, no matter how bad they are.
In this case, GPS clock synchronization to nanosecond levels is regularly done in meteorology, the relativistic effects are well known and compensated for, because it wouldn't work at all if they weren't, and the synchronization was confirmed by a non-GPS method.
Absolutely nothing to see here.
Maybe you need to turn your mouse speed up. I find it much faster to bang the mouse pointer to the top of the screen than to try and hunt for a thin bar somewhere in the middle of the screen.
Yes, which is why there were strict limitations imposed on what any police trojan was allowed to do.
They just ignored all that because there was no oversight, until just now.
Probably because they didn't actually "move away from a conventional desktop interface", but then again that doesn't explain why the writer thinks they moved away from WIMP either, as they did no such thing.
Actually, some screens seem to move as you'd expect, while others pop out, so it's not even consistent.
Looks incredibly sloppy.
Which means that the phrase "This decision-making is influenced only by technical factors, and nothing else" is a lie, so why say it in the first place?
No, it means they hadn't seen this trojan before now, genius. Nobody but the creators and the CCC had, before today.
Wait, you still think Diaspora is ever going to amount to anything at all?
Did you get this far down the thread without already noticing that Slashdot is dumb as toast nowadays? Nobody posting in this thread has even the tiniest sliver of a clue what they are talking about.
This is just history repeating, with Firefox now playing the role of Seamonkey, and Chrome that of Phoenix.
And if that liter volume is filled with pure water at 0 degrees Celsius (the temperature at which water freezes, but in the liquid rather than the solid state), and weigh that water, it weighs 1 kilogram.
This was the definition for about five or so years in the eighteenth century.
The US system of weights is already fixed to the metric system, and calibrated against the prototype kilogram in Paris, just like everyone else.
Which is definitely silly - the base unit is charge flow, and the derived unit is charge?
This is because we are better at measuring the effects of charge flow than of charge, and thus it is easier to find a unit definition based on it. Practicality.
But the lump of metal is located "somewhere" i.e. outside the U.S. So it can not be used.
Oh, you gravely underestimate the amount of work that goes into this system.
Every country has their own copy of the weight. Every now and then, they very, very carefully bring their own weight to Paris, and calibrate it against the weight that sits there. Then they equally carefully bring it back. Once it is back, more copies are manufactured locally, and sent out to institutions and industry who need it to calibrate their own equipment.
And so in the end, through many intermediate steps, your kitchen scales are calibrated against the single kilogram in Paris.
The definition of a unit must be physically instantiable. That is, you have to be able to use the definition to build a device or artifact that can be used to calibrate a meter for said unit. Otherwise, the unit is useless.
This means that some units still have cumbersome and strange definitions, as we do not have the technology to use the obvious definitions to calibrate measurement devices.
That definition include EVERYTHING that uses the original in ANY way.
Not at all. It is pretty obvious it refers to transformations of the entire work, not just usage of parts of it.
And drawing Mohammed is also something designed to inflate tempers.