Re: Underdetermination, for example:
Posted: Mon Jul 07, 2025 4:22 pm
The Greeks were often taught to me as being precursors to contemporary science. That seems plausible, however, science has also been practiced by some in religious societies (often rewarding some of those practitioners with a lot of grief). Where the Greeks began to lay foundations for contemporary theology was sort of given scant attention in my college education.Will Bouwman wrote: ↑Thu Jul 03, 2025 8:23 pm And then there's the Ancient Greeks. The story goes that Greek philosophy started with Thales of Miletus. He basically ran with the mythology of the time: that gods of water begat gods of soil, who begat gods of air, who begat gods of fire. The difference being that he did away with the gods and sought natural explanations for events.
The Greeks were a bit of an outlier in that earlier civilizations, Mesopotamia and Egypt in particular, had been founded on the flood plains of mighty rivers, their annual flooding leaving a deposit of fresh soil that made agriculture, and thus supportting urban populations viable. The Mesopotamians and Egyptians interpreted this as water turning into soil. Vegetation decaying at the bottom of pools gives off methane that bubbles to the surface, which was interpreted as the marriage of earth and water begatting air, and there are lots of different gods believed to be doing the begatting. Since methane is a flammable gas, it was inferred that air turned into fire, so the Greek elements, earth, water air and fire, are older that Greece. What made Greece different, at least before Thales, was that in the Theogeny, a story about the genealogy of Greek gods, the primordial substance was earth. The Theogeny was written by Hesiod up a mountain, where water springs from the hillside, hence according to Hesiod, the primordial substance was earth. At this point in time, about 600 BCE, there was a concensus that one thing could turn into another; transmutation was a thing. So you have this observable evidence and a broad agreement about what is going on, but there are lots of different gods that explain the same evidence equally well. So within the mythological paradigm, the various myths are underdetermined.
Things weren't much better in Thales new naturalistic paradigm. His immediate followers, Anaximander and Anaximemes had different views. Anaximander was particularly interesting, claiming that what defined the Greek elements was the properties of the underlying substance, which he called the apeiron. The mixture of hot and cold, wet and dry being unique to each with earth cold and dry, water cold and wet, air hot and wet and fire hot and dry. Anaximenes had a more conventional idea, but in his view the primordial substance was air. His evidence was that blowing air onto embers could turn them into flames, while condensation from breath is water. Other philosophers argued for earth or fire. So again, within the Greek naturalistic paradigm, the theories are underdetermined.
So now there are two paradigms, the theistis and naturalistic, both of which explain the same phenomena equally well, which makes them underdetermined. Despite 2 and a half millenia of thinking and experiments, we're still in the same boat.
So my questions are a bit Nietzschean. If there is no God, then what is there to make us think that science is superior to illusion. That discovering truth is preferable to living in an under determined world? For example, if and only if, it's equally possible to live with the belief that the planets are kept in elliptical orbits by fairies, as opposed to gravity, AND believing so pleases our biological instincts more, then is it somehow "objectively" better to believe in gravity instead?
OR
What if science ends up destroying the human species that currently inhabits the Earth, through the invention of something catastrophic? Would it behoove us not to pursue scientific understanding of that technology? Do we know if truth is inherently a good thing? What if we suddenly discover some ominous truth that undermines us all? Would it possibly be better not to learn that truth? Or to put it yet another way, if and only if a truth ends up making us all profoundly unhappy in the agragate, then which would be more important under those circumstances, knowledge of that truth or happiness?