Have a question or comment for Jon? Email him at jon_wertheim@yahoo.com or tweet him @jon_wertheim.
Right to the questions:
Jon, with the issue of medical exemptions for banned drugs in the news due to the email hack, can you explain the rationale for allowing an athlete who receives a valid exemption to compete? Granted, the athlete has done nothing wrong, but even if a banned drug is being taken for a legitimate medical purpose, the bottom line is that the athlete's performance is being enhanced—even if the enhancement is incidental.