They didn't say it doesn't work. They said it seems to make you dumber, at least on certain tasks - not the same thing as 'it doesn't work for studying or distr

They didn't say it doesn't work. They said it seems to make you dumber, at least on certain tasks - not the same thing as 'it doesn't work for studying or distraction'. Their findings are pretty interesting and relevant, at least for correcting a mis-perception that not a few people have about those drugs and what they're supposed to do (many people call them 'smart' drugs).