The Case Against Quantum Computing

MisterBill2

Joined Jan 23, 2018
27,513
OK, avoid the question, because it certainly points at a disturbing result of what certainly is likely.
And we know that those results would not be the way we wish things would go.
Atomic weapon proliferation is a potentially louder version of a similar issue, except that computers are a lot cheaper and not nearly as radioactive. So the majority of folks tend to feel that possibly the A-Bomb was not such a good invention.
 

MisterBill2

Joined Jan 23, 2018
27,513
Once again, a vocal presentation with flashy graphics, when a text presentation would have been VASTLY more worth the "click"! MAKE THE POINT, then provide the proof selected to verify the claim, and then repeat the asserted point!
Certainly faster processing can deliver faster results, but faster does not mean more accurate or more detailed.

IN ADDITION, consider that at best, only half of all changes are "for the better", while the balance are at best neutral in their benefit..

Any improvements in computed results will need to come from actual improvements in the code being executed as well as in the data being supplied.
Recall that ancient axiom about computers in general, which applies as much today as it ever did: "Garbage IN, Garbage out."
Still totally applies!
 

Futurist

Joined Apr 8, 2025
748
This guy is my favorite pop science expert on QM. This episode discusses (among other things) how QM can explain how extremely sensitive smell in dogs works.

 

MisterBill2

Joined Jan 23, 2018
27,513
It is also important to recall that the results of any computation are not likely to be any better than the quality of the actual software or the initiqal data input.
Recall the old axiom: "Garbage in, Garbage out." That applies no matter how powerful and fast the computer system is, without exception.
 

Futurist

Joined Apr 8, 2025
748
https://www.pnas.org/doi/10.1073/pnas.2523350123


Rational quantum mechanics: Testing quantum theory with quantum computers

Hence, insofar as a classical computer will never factor a 2,048-bit RSA integer, RaQM predicts that a quantum computer will not either. This predicted breakdown of QM could be testable in less than 5 y.
Its interesting that RSA does not guarantee 100% that the number has just two prime factors.
 

cmartinez

Joined Jan 17, 2007
8,760

Now, for the first time, physicists have matched detailed simulations done on quantum computers to experimental data gathered from work with solid materials. The research shows how the results of quantum simulations can be tested with real-world data — a capability that will become increasingly important as these machines begin to make calculations that are beyond those that ordinary supercomputers can manage. Two teams achieved the results independently, and the work is described in two preprints posted on the arXiv server in the past two weeks. These are yet to be peer reviewed.
 

MisterBill2

Joined Jan 23, 2018
27,513
"Reviewig" the results of a software operation is an interesting concept indeed!! I have wondered about how the results would be verified for computer results for a long time.
WORD PROCESSOR outputs can usually be read and checked for both grammer and facts correctness, usually, if a reader has knowledge of the topic. BUt how to verify the math-work when the formulas are not known??OR are the formulas known??? Oris the process for checking prime numbers so well documented that "mere humans" can also do it?? (Finding prime numbers has never been a goal for me.)
 
Quantum computers are really powerful because they can use superposition to measure all possible outcomes at once.They dont use superposition in the way you expect you can only measure 1 entity at the end but if the problem you want to solve has some sort of symmetry superposition along with a quantum algorithm allows you to check for all possible inputs.
 
And btw I want to take back something I have said:encoding a quantum state into classical bits does NOT speed up the solution time, you need quantum computers for that.
 
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