A Common Mistake
One simplistic critique used by those who prefer political solutions to economic solutions is to point out market failures. The existence of these failures proves, to them, that any government solution is justified no matter how costly.
Often, however, critics know little of economics and their arguments are often incorrect. Witness an op-ed published by UW psychology professor David Barash in the Seattle Times last week. He highlights what is known as the "tragedy of the commons." Where everyone shares common access to a resource, fish for example, individuals have no incentive to manage for the long term. Any fish left will simply be caught by your neighbor, so the incentive is to fish until there are no more fish, hence the tragedy.
In the editorial he cites another example: "It may be inconvenient to recycle and, in fact, easier for individuals simply to throw their garbage away, or to use more than their share of scarce commodities. In the process, they derive personal gain or enhanced convenience, while the cost — in overcrowded dumpsites or worldwide resource shortages — is, by contrast, a general one."
The only problem is that what he describes is not an example of the tragedy of the commons. There are clear property rights at landfills and there is a charge to use them. As landfills become full, the price to dump your trash will go up.
The problem with landfills (I should note here that we have a tremendous amount of space in landfills, by some estimates enough to last us into the 22nd century without opening new sites) is that government artificially keeps prices low to prevent people from dumping their trash in forests and fields or wherever they won't get caught. This is not a problem of the "commons" but of enforcement. Government could choose to charge appropriate rates and increase enforcement and the penalties for illegal dumping. That would adequately solve the problem, although the costs of enforcement might be very high.
Further he argues that people might use "more than their share of scarce resources." What is my share and who decides what my share is? If people hold property rights to those resources, like timber, iron, tin or water, the use of resources comes at a price. The more you use the more you pay and as those resources become "scarce" the price goes up. In fact, economics is often described as the science of "allocating scarce resources." Does he think we can make a better decision using politics? Can he show me an example where politics has worked better?
The ultimate point of his editorial is to argue for strong government action to address climate change. How confident can we be that his prescriptions make any sense when he doesn't seem to have a very good grasp of the very argument he attempts to make?

