Because Doping's ingrained in the cycling culture. Many teams encourage it, if they don't actually facilitate it.
As long as the DS can say we're very dissapointed in "X", we had no idea, yada yada yada, Nothing is going to change.
Real punishment for Team Management is the only thing that is going to turn this situation around
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.