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Invisible hand

The metaphor of the “invisible hand” coined by Adam Smith is one of those metaphors that does more damage to the concept behind it than any possible antagonist could.
Why?
The question of an agent
This metaphor is powerful because it refers to something that every human can understand – the hand. The hand cannot be anything other than an agent’s tool. This agent can be either physical (part of a concrete body, a concrete agent in a Gea biotope) or metaphysical, such as God. In all cases, it is clear that the functional hand cannot be attached to anything that is not an agent. We cannot perceive a hand without a particular force, with a specific interest, moving it; that is an agent.
Unfortunately for the metaphor, and fortunately for Adam Smith, what he meant by it goes directly in the opposite direction, to be understood as some kind of agent behind the market. The essence of a market is that there is no agent behind it. Just as there is no agent (homunculus theorem) behind human brains, there is no hidden force embodied in the hand metaphor. There is no central command over human brains. There is no agent behind human brains. Human brains are part of a more extensive network (a memetic field) and reproduce that network; in other words, a co-evolving memetic field.
Market as emergent property
The market is an emergent property of a complex value system designed for exchange.
For this reason, it is impossible for a theist to truly understand and/or support the free market (while the deist can, at least in principle). Either he believes in an invisible hand (of God) and thus contradicts the concept of the free market, or he understands the free market and thus excludes any possibility of such a God influencing human life. For: the essence of human life is the exchange of goods. When this exchange is enforced, when values are centrally dictated, it is no longer an exchange but a dictatorship.
When God dictates the value of a thing, it is no longer a human value. Human values are emergent properties of “us” only when they arise from exchange in the free market of values. When we understand that there is no difference between the value of a meme and the value of any good, and that the value of a good is encapsulated in the value of a brand (meme), we see that we live in only one market: the free market of exchange of memes (values). No invisible hand governs this market. We are our own enemies (and friends).
A God is not an agent. He does not possess a functional hand; Maradona does. However, that does not expel the God from our reality. God is “a real” of our reality, a phallic signifier of our reality. God thus saturates formal democracy.
Socialists are theists
An even more compelling argument goes in the opposite direction. If an atheist believes in a centrally controlled market (the welfare state), he is a theist! He is, in effect, pretending to be an atheist and living in cognitive dissonance. You can’t be an atheist and support the welfare state at the same time.
I would venture to say that it is precisely the fear of “me” being the sole responsible party that drives humanity to dream of some sort of invisible hand that would absolve “me” of that responsibility. This is why we prefer to talk so much about humanism (something abstract, somewhere…) rather than homonism, which posits individual responsibility.
I think there is an interesting gap in the argument here: emergence describes how something comes into being, not whether the resulting state is good, just, or free. Monopoly, panic, and extreme concentrations of power can all arise entirely as emergent phenomena.
More importantly, if human values are themselves the product of a free “market of memes,” then the welfare state can also be an emergent product of that very same market. If millions of people, without any central director, develop a preference for solidarity, exchange and propagate that value politically, and eventually institutionalize it through democratic processes — who exactly is “God” in this scenario?
Perhaps the real distinction, then, is not emergence vs. central authority, but the rules of the game vs. the determination of its outcome. Football needs rules and a referee, but it does not need someone to determine the final score. The same can be true of a market.