I don’t know if what follows will be clear or will convey my thoughts very well, but here goes.
I was in the shower this morning, thinking about nothing specific, and somehow I started feeling irritated, as I often do, at people who are dogmatic about ideologies and try to apply them to every possible situation or state of the world. Then a connection of ideas clicked into position for me in the phase space of the mind, and I thought about the notion of scientific models.
There’s a famous quote about model-building/using in science that says, “All models are wrong, but some are useful.” (I don’t recall who said it, but I’ll look it up before posting this and I’ll put it in the footnotes*.) The statement refers to the fact that, to try to understand the world, scientists build models—not usually literal, glue-together type ones, though that occasionally does happen—and see how well those models replicate or elucidate facts of external reality.
They are all simplifications, as they must be, since only the universe itself appears to have enough processing power to simulate the universe fully. Being simplifications, and reality being complex and prone to chaos (the mathematical form thereof, though the classical kind does occur as well) a simplified model can never be entirely correct. But some of them are nevertheless quite valuable and useful—take General Relativity and Darwinian natural selection as two good examples—though we know they do not fully encompass every aspect of reality.
Some models are misleading, such as the old notion of the brain as a cooling mechanism for the blood, and some are simply not that useful, such as seeing the brain as a system of hydraulic tubes and valves of some sort. And when you try to apply a model to a situation in which it doesn’t apply, it will give you wildly wrong (or “not even wrong”**) answers.
It occurred to me there in the shower that human ideologies are quite similar. They are simplifications, models of the world. Some are useful in some ways and to some degree, and some are about as applicable as the notion of a spherical cow (which, despite being the punchline of a physics joke, could in principle be useful somewhere sometime). But it is as absurd to measure every event or occurrence or interaction against some finite ideology as it is to try to apply the germ theory of disease to the question of “dark energy”.
It’s absurd—if you’re being rigorous and serious—to think that the ideas of Karl Marx contain all that is needed to produce a good, fair, productive, and stable society. But it’s just as absurd to think that laissez-faire, free-market capitalism will for its part provide everything that could possibly be needed for a robust and free and beneficent world, or that the ideas of “post-modernism” contain all that need be said about civilization.
The world is complicated, with many forces interacting at many levels, and no single idea, however personally attractive, can encompass all of it in a useful way. Capitalism can encourage the production of great innovation and abundance, but it has no inherent justice, despite some popular belief and the works of Ayn Rand. It can leave people utterly bereft and tortured and miserable through no fault of their own but bad luck. It can also evolve into inadequate equilibrium states in which isolated, hoarded wealth sits still and does no one any real good while the whole of civilization collapses around it, just as biological systems can evolve into self-destructive states, like cancers, when an individual mutated cell becomes so successful at reproducing itself that it kills off the body in which it resides.
But if people are not rewarded for their work or their creativity or their acumen to some degree that is at least on some level commensurate with the value they produce, then people will stop producing. Nature does not tend to evolve creatures that act purely to their own detriment without any “personal” gain of some kind It’s not an evolutionarily stable strategy; such creatures are rapidly selected out. Humans are no exception.
And history (and mathematics) has shown that economies are too complex to be planned by anyone or any group, and probably by any form of individual intelligence, no matter how advanced. The information and knowledge required is too staggeringly vast.
It’s not merely political or economic ideologies that are limited and imperfect, either. All religions fall into this same category. Some have good and useful ideas, but only the indoctrinated could imagine that highly limited ancient collections of stories or poems or proscriptions and prescriptions can provide even vague guidance about all the things in the modern world, let alone the potential future world. “Eastern” religions do no better than “Western” ones, though again, some are more useful and some are less so.
Of course, any ideology that is dogmatic is much more likely to be useless or detrimental than one to which inheres the potential for updating and improving itself. It’s more or less mathematically impossible for a finite set of ideas put down on paper (or wherever) to have successfully discerned all that can be known about how to approach reality.
I think it would be much better if we thought of our various ideologies as models, hypotheses—theories*** at best. Then we could have many options available to measure and address issues as they arise, and we could honestly assess whether the notions of, say, existentialism or deontology or utilitarianism best apply to a given moment or challenge.
Again, I’m not sure how well I’ve expressed my thoughts here, and I’m sure I could go on and on about this, trying to tease through it as well and thoroughly as possible. I’ll spare you (and me) that for the moment. But I think it was a useful realization. Though I doubt even this has universal applicability in all possible worlds.
Have a good day.

*It was George Box, a statistician, who is credited with this particular phrase, but the idea had been expressed in terms of maps and territories in similar overall fashion previously.
**This expression is attributed to Wolfgang Pauli (of the eponymous exclusion principle fame), one of the early giants of quantum mechanics.
***In the scientific, not the colloquial sense.

