Re:How trains could replace planes in Europe
by NoGravitas on Thursday November 11, 2021 @05:09PM
(#29193850)
The Efficient Market Hypothesis has been effectively disproven; it was proven that it's equivalent to P=NP, and it's very unlikely that P=NP. In other words, if markets were efficient, we could just use simulated markets to solve NP-hard problems in polynomial time. Not surprisingly, that doesn't work.
[ Parent
| on HN ]
Re:How trains could replace planes in Europe
by Dylan16807 on Thursday November 11, 2021 @05:36PM
(#29194157)
> The Efficient Market Hypothesis has been effectively disproven
No, the opposite of "effectively". That's like saying you can't plan an effective route because CSP, or you can't use SAT solvers to design things.
Markets aren't perfect, and that's all that proof manages to show. They could still be 99.99% accurate based on that logic. It's a cute thought experiment, not something practical.