qualifications and jobs, or the value of the achievements made through such competition. In some areas of life, the main purpose is to advance knowledge, and so maximizing the achievements made is plausibly more important than having a level playing field. As Anders Sandberg has commented, “that many of the theorems of the mathematician Paul Erdös were proven under the influence of amphetamines does not diminish their intellectual brilliance or importance” (Sandberg 2008). And, in the quest for a cure for cancer, if it turns out that cognitively enhanced scientists would be able to discover a cure more quickly than unenhanced scientists, then using cognitive enhancement could result in millions of lives being saved. In other areas of life, it is extremely important to remain alert and focused. For those working as airline pilots or surgeons, the consequences of a lapse in concentration could be dire. cognitive enhancement could help prevent such lapses. These examples demonstrate that, while fairness is important, avoidably slowing the advancement of scientific knowledge or reducing the alertness of airline pilots and surgeons is too high a price to pay to ensure that those who do not wish to enhance are able to compete on a level playing field. In other areas of life, however, competition is more important. A key purpose of education in schools and universities is to enable students to compete for the best qualifications. Should cognitive enhancement be banned in such contexts? There are at