An aggressive drug-testing program would cut down on certain abuses, but its never going to catch everyone - or even close to everyone.
I love it when actors come to you with a problem and you have to listen. You'd like them to just get on with it, but it often means that there's a problem with the script.
The funny thing about history is that we imagine that people didn't laugh in the old days, but of course they did, at stupid things.

