My question pertains to the idea of happiness being induced by a drug. If the drug--like modern anti-depressants--actually changes a person's neurochemistry such that for all intents and purposes the brain looks just like a "happy" brain, then wouldn't you consider that person happy? (Would you give a different answer for a drug like Ecstasy that alters the brain in slightly different ways than classic neurochemical happiness but still brings about a perception of happiness?) And what about the perception of happiness over the long haul? If someone is on anti-depressants for, say, fifty years, and has an over-all sense of peace, purpose, etc that they would NOT have otherwise had, have they, in fact, been happy?