Markets by themselves tend to explore only spaces where large parts of the population take them. Because of limited information, most of us often prefer clear s

Markets by themselves tend to explore only spaces where large parts of the population take them. Because of limited information, most of us often prefer clear short term benefits over long term uncertain and often unclear benefits. Legislation is a good tool to, at least temporarely, force markets to explore parts of the state space they are extremely unlikely to explore by themselves.