The late Dr. David Bohm presented a new formulation of work he did in the the 1950s. He dropped the original work of the '50s because I believe Einstein didn't think very highly of his ideas. However with the advent of Bell's theorem calling into question Einsteins theory of locality (you know the spooky action at a distance), Bohm renewed his pursuit of his theory of Quantum mechanics. The dislike of Bohm's theory is due to the fact that not that much changes. He in effect moved the goal line by stating the random nature of quantum mechanics is not due to any underlying physical property implied by the theory, instead it's due to our lack of knowledge of the state of the system at the beginning of the experiment. That and the fact that dimensions run wild with even simple calculations of particle experiments.
I believe the proof against hidden variable was due to Von Neuman (?). But Bohm addresses this in his last book and his theory is not affected by the proof.
So what's cool about all this is that if Bohm's theory is correct then it changes Einsteins Theory of Relativity. In Relativity is the concept of locality, that everything is capped by the speed of light. So that an event that happens on one side of the solar system can be detected no sooner than it would take light to travel across and reach a detector (your eye). But if Bohm's theory holds special quantum mechanical events could be transmitted faster than light (I believe near instantaneous).
I apologize in advance for errors in history. It's been a while since I've read about this stuff. But I'm glad Bohm's theory is alive and kicking. Even if he was a Marxist.
Bohm’s hypothesis might be alive if Ives’ and Bridgman’s hypotheses are. Of course they are, but nobody cares for alternatives.
from some reading today, I learned that (probably vastly over-simplifying and being incorrect here) that Bell’s Theorum said that if we want hidden variables then we must also accept instantaneous communication across light year distances.
in other words, maybe hidden-variable explanations can still be valid, but the explanation must somehow take into account nonlocality.
one thing that freaks me out is the (I believe commonly accepted) concept of “advance waves” which are electromagnetic waves that travel backwards in time to exactly “balance out” every normal (goes forward in time) electromagnetic wave.
my head hurts.