Why then do I still see all these ads that try to entice people to sell their gold jewelry?
Anyhow as I bought most of my gold at around $400/oz I am not losing sleep over timing the sale of my gold and silver stash. Don't see any enticing investment alternative out there to park my money.
Because my kids and I still enjoy the old Wii, and I like to be able to hang on to the old games and controllers. Also my wife wants Netflix but I don't want yet another device cluttering up the TV shelf space. So the WiiU fits the bill.
Laser of that class are scary. Even the stronger laser pointers on the market have enough power to irrevocably damage your eyes. All the more because you won't feel any pain.
As the other AC helpfully pointed out it is the reflections that are the biggest concern. They are likely to increase if you put aluminum foil on your wooden frame. Hence my warning.
As a word of caution I should add that if you do this please always wear protective goggles. (Not that you shouldn't always do this when around a powerful laser anyhow).
You are correct but your comment is somewhat misleading as I read it as implying that an "unperturbed" unitary evolution of the wave function requires less resources, but for simulating quantum process the opposite holds:
Consider N fully entangled qubits, a computer has to compute all interference terms of the combined wavefunction i.e. the complexity to calculate this increases exponentially with N. This is why, for instance, calculating protein folding is considered NP.
It is a problem that is haunting all quantum chemistry and only via clever approximations are we currently able to get any good orbital simulations of complex molecules (e.g. this old work-horse)
Well good thing I have an AC pointing out that complexity theory has absolutely no bearing on practice i.e. is absolutely useless. Now we finally have a good reason to close all these theoretical CS depts that suck on the tax payer's teat.
Obviously you already have an algorithm that can factorize primes in polynomial time. All that excitement about Shore's quantum algorithm serves you well to keep this secret hidden so that you can embark on a black hat mission to save the world and/or make you the riches and/or most powerful man on earth.
I fully and humbly understand that this necessitates that you have to impart your wisdom as an anonymous coward, .
You get to the point of what is the problem with the underlying philosophical assumption. We can only make statements about a hypothetical "outer universe computer" if certain rules that we establish in this one still hold there, otherwise it's simply religion.
If this was combined with the philosophical assumption of Solipsism I guess this might work in a classic simulation scenario, otherwise I think synchronization issues would crop up.
You have a point, as time would be a parameter of the simulation, but to the extend that we can make any statements about such an "outer" computer it'll still follow the same rules as our own Turing machines, everywhere QM is simulated in the "virtual" universe it'll quickly run up exponentially growing resource consumption. And why exactly do we assume an "outer" classic computing machine rather than a Quantum computer or a good old analog computer?
Although the prevalent digital computers of our time are all Turing machine equivalent, there is no such thing as just one computing paradigm.
She used to be a happy Nokia customer but being a M.D. she didn't pay attention to the gizmo market and unfortunatelly didn't ask me prior to deciding on her new phone.
Basic functionality that she needs for her job i.e. Outlook contact import, how long a call lasts, alarm function when the phone is turned off etc. are not working. The touch screen menu is so sensitive that sometimes she accidentally places calls, on the other hand she sometimes has a hard time accepting calls.
Other than that the phone and its software looks really sleek.
After spending hours on the Nokia hotline and getting answers like "we don't know if this is supposed to work" or "we never thought about that", she now considers returning the phone and has been turned from a loyal low attention Nokia customer to one that wants anything but another Nokia.
... efficiently on a classic Turing machine. This has been established since Feynman originally proposed it. So I simply don't understand the premise of this research. Not that this is hasn't come up before with SUSY string theorists.
Apparently some physicists are completely ignoring this branch of theoretical computer science.
Now if the question was that the universe might be a quantum computing simulation that'll make more sense, as these can also efficiently simulate field theories.
But my understanding is that this is not what they are investigating here.
I'll fail to see how nuclear waste reprocessing is any different from other high tech that requires excruciating quality control e.g. like the late space shuttle.
Yes, accidents will happen, but organizational it is entirely possible to enforce proper oversight and ensure that no counter-productive incentives are put in place.
I.e. you simply cannot run a reprocessing plant as a profit center were cost cutting will always trump all other concerns.
Commercially available accelerator systems have come a long way. Also the grid infrastructure in Europe has seen massive investments to handle the power fluctuations introduced by the massive wind farms and solar.
Don't think that this poses a principal feasibility issue. The fact that you can switch this off and don't have it put out the same power at off-peak hours could actually be an attractive feature.
Slashdot Mirror
You chose your username wisely. That's some really impressive obfuscation.
Why then do I still see all these ads that try to entice people to sell their gold jewelry?
Anyhow as I bought most of my gold at around $400/oz I am not losing sleep over timing the sale of my gold and silver stash. Don't see any enticing investment alternative out there to park my money.
Well there's that :-)
Then again I also don't want to pay for Netflix unless I can put out a HD signal.
Because my kids and I still enjoy the old Wii, and I like to be able to hang on to the old games and controllers. Also my wife wants Netflix but I don't want yet another device cluttering up the TV shelf space. So the WiiU fits the bill.
Laser of that class are scary. Even the stronger laser pointers on the market have enough power to irrevocably damage your eyes. All the more because you won't feel any pain.
As the other AC helpfully pointed out it is the reflections that are the biggest concern. They are likely to increase if you put aluminum foil on your wooden frame. Hence my warning.
As a word of caution I should add that if you do this please always wear protective goggles. (Not that you shouldn't always do this when around a powerful laser anyhow).
That should do the trick.
You are correct but your comment is somewhat misleading as I read it as implying that an "unperturbed" unitary evolution of the wave function requires less resources, but for simulating quantum process the opposite holds:
Consider N fully entangled qubits, a computer has to compute all interference terms of the combined wavefunction i.e. the complexity to calculate this increases exponentially with N. This is why, for instance, calculating protein folding is considered NP.
It is a problem that is haunting all quantum chemistry and only via clever approximations are we currently able to get any good orbital simulations of complex molecules (e.g. this old work-horse)
Well good thing I have an AC pointing out that complexity theory has absolutely no bearing on practice i.e. is absolutely useless. Now we finally have a good reason to close all these theoretical CS depts that suck on the tax payer's teat.
Obviously you already have an algorithm that can factorize primes in polynomial time. All that excitement about Shore's quantum algorithm serves you well to keep this secret hidden so that you can embark on a black hat mission to save the world and/or make you the riches and/or most powerful man on earth.
I fully and humbly understand that this necessitates that you have to impart your wisdom as an anonymous coward, .
You get to the point of what is the problem with the underlying philosophical assumption. We can only make statements about a hypothetical "outer universe computer" if certain rules that we establish in this one still hold there, otherwise it's simply religion.
If this was combined with the philosophical assumption of Solipsism I guess this might work in a classic simulation scenario, otherwise I think synchronization issues would crop up.
You have a point, as time would be a parameter of the simulation, but to the extend that we can make any statements about such an "outer" computer it'll still follow the same rules as our own Turing machines, everywhere QM is simulated in the "virtual" universe it'll quickly run up exponentially growing resource consumption. And why exactly do we assume an "outer" classic computing machine rather than a Quantum computer or a good old analog computer?
Although the prevalent digital computers of our time are all Turing machine equivalent, there is no such thing as just one computing paradigm.
This entire enterprise reminds me of the obsolete yestercentury assumption that the universe was functioning just like the innards of a mechanical clock.
Anybody who knows anything about the market knows that one doesn't really have to remember Nokia smartphone names any more.
lol :-)
... by getting a Windows Mobile 7 device.
She used to be a happy Nokia customer but being a M.D. she didn't pay attention to the gizmo market and unfortunatelly didn't ask me prior to deciding on her new phone.
Basic functionality that she needs for her job i.e. Outlook contact import, how long a call lasts, alarm function when the phone is turned off etc. are not working. The touch screen menu is so sensitive that sometimes she accidentally places calls, on the other hand she sometimes has a hard time accepting calls.
Other than that the phone and its software looks really sleek.
After spending hours on the Nokia hotline and getting answers like "we don't know if this is supposed to work" or "we never thought about that", she now considers returning the phone and has been turned from a loyal low attention Nokia customer to one that wants anything but another Nokia.
... efficiently on a classic Turing machine. This has been established since Feynman originally proposed it. So I simply don't understand the premise of this research. Not that this is hasn't come up before with SUSY string theorists.
It simply flies into the face of what these days is known about computational complexity.
Apparently some physicists are completely ignoring this branch of theoretical computer science.
Now if the question was that the universe might be a quantum computing simulation that'll make more sense, as these can also efficiently simulate field theories.
But my understanding is that this is not what they are investigating here.
In other articles I've seen a 10% number floating around (don't have a link at the ready though).
I'll fail to see how nuclear waste reprocessing is any different from other high tech that requires excruciating quality control e.g. like the late space shuttle.
Yes, accidents will happen, but organizational it is entirely possible to enforce proper oversight and ensure that no counter-productive incentives are put in place.
I.e. you simply cannot run a reprocessing plant as a profit center were cost cutting will always trump all other concerns.
Thank you very much! Very interesting stuff.
Two follow up questions:
How many coders have been working on the software?
What kind of version control system do you use?
(BTW your site www.gdargaud.net rocks!)
Fair enough should probably be called "waste" recycling.
Commercially available accelerator systems have come a long way. Also the grid infrastructure in Europe has seen massive investments to handle the power fluctuations introduced by the massive wind farms and solar.
Don't think that this poses a principal feasibility issue. The fact that you can switch this off and don't have it put out the same power at off-peak hours could actually be an attractive feature.
My understanding is that this would be designed with passive cooling.
Ups, accidentally replied to the wrong comment. Please disregard the previous reply.
Because your stance is so obviously non-political?