Justinian I: "I wasn't even being serious about the land standard. I just think a gold standard is not necessarily. The monetary system can be stable if you prevent systemic externalities. Our government, on the other hand, only creates them when it pushes for policies to increase "social justice" and home ownership."
The monetary system is inherently more stable when it is fixed to something tangible, rather than the whims of bankers who hold their meetings behind closed doors. The government has historically abused its ability to print currency, especially in times of war. The effects are equitable with counterfeiting, where the people who get to spend the "new" money first reap a greater reward than those who obtain the money last. By then, it has already depreciated in value due to inflation.
Although fractional reserve banking could very well happen in a free market on money, I don't have much faith in the business model. It's performance would have to be determined based on its own merits. I object to the fact that we are not given a choice in our unit of exchange.
"It should let banks make rational decisions, and only regulate when necessarily to prevent undesirable externalities, like pollution from factories or risky investments by banks. And don't say that the market corrects externalities, because a purely free market has never existed to test that claim, and it is unlikely that such a system will happen."
A purely free market doesn't /have/ to exist to test that claim. Externalities don't have much meaning in economics, anyway, as they can not be revealed through human action -- the foundation of economic science. An action merely reveals a preference, not the why or how. The reason an individual chooses a particular course of action over another is irrelevant. It's unimportant to the economist if an action is motivated by an externality or something else, whatever transactions result (if any) must be treated the same.
Take your pollution example, the most commonly given example of a negative externality. Let's say I own a factory making Whatsits, the byproducts of which pollute a nearby river much to the chagrin of the property owners downstream. Assuming the property owners have any actual claim to the river, then I should have to negotiate with them. It's impossible to predict what solution we may settle on. I may have to pay them restitution, I might have to move my factory elsewhere, I could pay /them/ to move, or better yet reduce the amount of pollution somehow; either by installing some sort of control device or using a different chemical for my Whatsits that release a less harmful byproduct. It doesn't matter which solution or how it is arrived at, from the perspective of the economist all that can be revealed is that everyone involved prefers the solution to the situation that existed beforehand.
Another example might be an airport that has an approach path over a crowded neighborhood. The residents might complain that the noise of approaching aircraft is detrimental to their quiet enjoyment. I won't get into the difficulty in determining the value of subjective conditions like happiness and satisfaction, however the airport has other options at their disposal than restitution. Such as changing their approach procedure to overfly a less densely populated area or where there are fewer residential neighborhoods. They could impose restrictions on aircraft performance, such as how fast they may go and at which altitudes they may cross specific intersections.
The point is that anything is possible, though I am the first to admit that the free market is no panacea. Individual people and private enterprise alike are wholly capable of making mistakes, and no one has the foresight to predict every possible outcome or consequence of an action. My position is merely that mistakes are more readily corrected for, and less pervasive, than those committed by government.
Caution Wake Turbulence