In the short run, exchange—whether a trade between two people or an act of production that trades inputs for outputs—makes people better off. This results not by creating more physical stuff but by rearranging what exists to make it more valuable to human beings. While we each think we’re better off when we make an exchange, mutual benefit does not require a denial of scarcity; rather, exchange is one more way we push back against it.
This mutual benefit reinforces the point that value is a product of human minds, not of the objective physical world. In fact, we cannot even understand the concept “resource” without recognizing this point. For most of human history oil was a nuisance. People didn’t want land with oil on it because it polluted the soil. However, once human minds realized that it could be converted to energy, it became a resource, and as we begin to create substitutes for it, as with copper wire, it will become less of a resource. From an economic perspective, what makes something a resource and what determines its scarcity is the interplay between its physical quantity and the human mind’s perception that it can satisfy human wants.
In the longer run, the benefits of exchange, when combined with the institutions of the market, create the wealth that people can save in order to finance the investments that will lead to better and cheaper products for exchange. Real, tangible economic growth happens—not just for the wealthy, but for all. Again, we stretch the resources we do have even farther.
Theory aside, it would also be hard to deny that several centuries of more or less free markets have produced a tremendous rise in the living standards of the poorest people in the West. The same is beginning to happen elsewhere. To argue that the wealth of the wealthy is the cause of the poverty of the poor (the “some win at the expense of others” argument) flies in the face of historical facts.
Poverty and early death have been the norm throughout history. The power of private property, free exchange, and markets to change that norm has been the single most progressive force in human history. Scarcity is all too real and causes all too much human suffering, which is why we need genuine market institutions to continue to reduce its effects, especially on those who suffer most.
You see, we do care. Our way, the system of natural liberty, works. Those others don't.
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