Your pot/music comparison to show reflexes being unaffected doesn't really work when the music industry has a long history of drug abuse of all kinds, including

Your pot/music comparison to show reflexes being unaffected doesn't really work when the music industry has a long history of drug abuse of all kinds, including alcohol. It's not very hard to find stories or even videos of musicians being drunk and playing great shows. It is almost a cliche to have images of legendary musicians drinking from bottles of hard liquor while on stage.