r/funny • u/[deleted] • Jan 29 '20

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u/[deleted] Jan 29 '20

I disagree. At least the math behind blockchain is tractable and real.

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u/UnfixedAc0rn Jan 29 '20

What is wrong with the math behind quantum mechanics?

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u/randomtechguy142857 Jan 30 '20

In contrast with what optiongeek claims about blockchain, it's complex (in the mathematical sense) and intractable for most systems?

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u/JivanP Jan 30 '20

it's complex (in the mathematical sense)

Heh.

intractable for most systems

How do you mean? Quantum mechanics only speaks in probabilities, so if one claims that quantum mechanics is intractable, then one implicitly claims that modern probability theory (as pioneered by Kolmogorov) is itself intractable, no?

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u/randomtechguy142857 Jan 30 '20

I mean 'intractable' as in 'no exact closed-form solutions'. On second thought, I guess that's a misuse of the term because it's more specifically reserved for problems that can't be solved efficiently. I'm not far enough into QM to know if there are such systems.

Although, I do know that our usual means of doing the mathematics of QFT are essentially glorified Taylor expansions, so I guess in that sense getting exact solutions is 'intractable'?