> In quantum information theory, quantum discord is a measure of nonclassical correlations between two subsystems of a quantum system. It includes correlations that are due to quantum physical effects but do not necessarily involve quantum entanglement.
> ("This means that hard-to-measure optical properties such as amplitudes, phases and correlations—perhaps even these of quantum wave systems—can be deduced from something a lot easier to measure: light intensity." https://news.ycombinator.com/item?id=37226121#37226160 )
Stand near a field of soybeans; and you can feel their unified hatred for all that is Mobile. They mostly talk about it through scent, I think; which makes it all the more oppressive and ominous.
(Edit)
From "Low current around roots boosts plant growth" (2023) https://news.ycombinator.com/item?id=38268128 :
> Is there nonlinearity due to the observer effect in this system?
> From how many meters away can a human walking in a forest be detected with such an organic signal network?
> FWIU mycorrhizae networks all broadcast on the same channel? Is it full duplex; are they transmitting and receiving simulatenously?
Quantum discord: https://en.wikipedia.org/wiki/Quantum_discord :
> In quantum information theory, quantum discord is a measure of nonclassical correlations between two subsystems of a quantum system. It includes correlations that are due to quantum physical effects but do not necessarily involve quantum entanglement.
From https://news.ycombinator.com/item?id=37226121#37226160 :
> ("This means that hard-to-measure optical properties such as amplitudes, phases and correlations—perhaps even these of quantum wave systems—can be deduced from something a lot easier to measure: light intensity." https://news.ycombinator.com/item?id=37226121#37226160 )
https://westurner.github.io/hnlog/#story-37987061 ... Ctrl-F "plenoptic"; the plenoptic function describes all photons in a closed system