The Merits and Demerits of Quantum Explanations

Almost since the rise of quantum mechanics, the physics of the very small, speculative thinkers have formed a kind of aura around the field in attempts to help them give various puzzling phenomena  a scientific explanation. Among these are consciousness, the mind-body problem, telepathy, near-death experiences, and the like.

A philosophically serious attempt in this direction is an appendix in Hans Jonas’ book, The Imperative of Responsibility, 1979. The appendix (pp. 204-231 in the 1984 University of Chicago Press edition), is titled “Impotence or Power of Subjectivity, A Reappraisal of the Psychophysical Problem.” I have read many other such takes, to be sure, but none has shown any rigor, whereas Jonas’ work does. He tackles the problem that Descartes had already struggled with. Assume that we do have an autonomous spiritual self, however it is called (res cogitans by Descartes, subjectivity by Jonas); hereafter I’ll refer to it as “self.” How does this immaterial something interact with the physical world in a meaningfully causal way—or vice versa?

The merits of quantum mechanics as an explanation lie in the fact that it deals with the extremely tiny phenomena at the subatomic level—where the energies involved are also minute. The tentative solution to the mind-body problem is that the self, whatever it is, may have energy enough to move “matter” at the quantum level. Then, if an appropriate structure of amplification has evolved, thus a neuronal network like the brain, an immeasurably tiny intervention by the self can eventually result in a physical action like raising the arm or saying something, both because I want to. This has merit—and produces, at least in me, a kind of intuitive ascent. It points to a potential explanation—and Jonas does not go any further than that. The only assumption we have to make is that the self at minimum has some minute ability to interact with matter at the subatomic level.

The demerits of quantum explanations (and Jonas does not go there, but others do) is to suggest that the only difference between what we traditionally call the spiritual and contrast to the material is a difference in density or wavelength. Therefore souls are just as material as everything else—they’re just made of more subtle stuff.

Here I have the opposite reaction. I don’t believe a word of it. There may be subtle regions made of subtle matter, etc., etc., but matter, no matter how subtle, can’t possibly produce consciousness. The entity we call the self, therefore, is different from matter in kind, not just in degree. Nor is it absent in this coarse material realm. It’s plentifully present here in the ordinary world—and doing plenty of damage as well as good. And in both realms (coarse and subtle) it has, no doubt, a certain amount of force that it can exercise. In these dense regions, however, to exercise that force on the congealed energies we call matter, it needs amplification through machines—of which our bodies are the first and most potent versions.

Jonas wrote his appendix before extensive assembly of data on near-death experiences had even begun. One of the interesting result of those studies is the discovery that disembodied selves have the devil of a time interacting with other people—but an easy time passing through walls. But they do move about, more or less at will. Separated from their tool, the body, they are seriously handicapped here. But, presumably, not so in the regions beyond the border. Manner of speaking. And it would seem to me, those who first arrived here, finding themselves in this valley of dense matter, started to mess about with particles at the quantum level. And lo and behold. In the wink of a few millennia they had made the first living cell. First came chemical civilization, fashioned by nudging quantum particles this way and that. Next came life, then civilization. And now back to studying quantum mechanics again. What goes around comes around. But what they were then, and we still are, is something other than either energy or matter. This is a vale of body-making, not of soul-making.