Marketplace of Ideas: Free speech and expression
The "marketplace of ideas" is a rationale for freedom of expression based on an analogy to the economic concept of a free market. The "marketplace of ideas" belief holds that the truth or the best policy arises out of the competition of widely various ideas in free, transparent public discourse, an important part of liberal democracy.The concept also has roots in John Milton's argument for freedom of expression. Milton argued that the individual is capable of using reason and distinguishing right from wrong, good from bad. But in order to be able to exercise this reason correctly, the individual must have unlimited access to the ideas of his fellow men in "a free and open encounter." In Milton's writings can be found the idea that when people argue against each other the better argument will prevail.