If you think that some highly mathematized part of the economic literature published in major journals and widely cited, however, is false, you can turn away considering that this tentative is not convincing and does not deserve to be treated in textbooks or courses. But when you see that it is still again and again quoted and used as an argument based on its highly mathematical character to justify questionable practices, you became convinced that complete clarity is really needed on this issue . This is the way that is followed here. This monograph is a rigorous dismantling of the concept of market efficiency for a non-specialist reader but demanding. The approach is to re-route the intellectual ambition behind this notion of being a bridge between the proper allocation of resources and certain mathematical situations. The verdict of this investigation invites to reflect on the consequences of the financial markets on the environment.
