Now, there’s one other thing that modern quantum mechanics doesn’t handle. Oddly enough, physics at present has no contact with the notion of actuality. You see, classical physics has at least some notion of actuality in saying that actuality consists of a whole collection of particles that are moving and interacting in a certain way. Now, in quantum physics, there is no concept of actuality whatsoever, because quantum physics maintains that its equations don’t describe anything actual, they merely describe the probability of what an observer could see if he had an instrument of a certain kind, and this instrument is therefore supposed to be necessary for the actuality of the phenomenon. But the instrument, in turn, is supposed to be made of similar particles, obeying the same laws, which would, in turn, require another instrument to give them actuality. That would go on an infinite regress. Wigner has proposed to end the regress by saying it is the consciousness of the actual observer that gives actuality to everything.”
David Joseph Bohm FRS (/boʊm/; December 20, 1917 – October 27, 1992) was an American scientist who has been described as one of the most significant theoretical physicists of the 20th century and who contributed unorthodox ideas to quantum theory, neuropsychology and the philosophy of mind.
Bohm advanced the view that quantum physics meant that the old Cartesian model of reality – that there are two kinds of substance, the mental and the physical, that somehow interact – was too limited. To complement it, he developed a mathematical and physical theory of “implicate” and “explicate” order. He also believed that the brain, at the cellular level, works according to the mathematics of some quantum effects, and postulated that thought is distributed and non-localised just as quantum entities are.[not in citation given]
Bohm warned of the dangers of rampant reason and technology, advocating instead the need for genuine supportive dialogue, which he claimed could broaden and unify conflicting and troublesome divisions in the social world. In this, his epistemology mirrored his ontology. Due to his Communist affiliations, Bohm was the subject of a federal government investigation in 1949, prompting him to leave the United States. He pursued his scientific career in several countries, becoming first a Brazilian and then a British citizen. He abandoned Marxism in the wake of the Hungarian Uprising in 1956.
Bohm’s main concern was with understanding the nature of reality in general and of consciousness in particular as a coherent whole, which according to Bohm is never static or complete but rather an unfolding process.