A group of neuroscientists, psychiatrists and ethicists have suggested that the society should be more open to the use of drugs that boost brain power rather than staying away from them. In a recent survey, it was found that almost 25 per cent of students at US universities bought Ritalin or Adderall - prescription drugs to treat attention-deficit hyperactivity disorder. And the students routinely buy these drugs on black markets to boost memory and concentration. The stimulant Modafinil ha