From News of the Weird:
In June, federal judge Fernando Gaitan Jr. ordered Missouri to suspend executions until substantial changes are made in its procedures, including specifying exactly which lethal drugs are to be used and in what quantity. Gaitan also pointed out that the doctor overseeing the state's executions is dyslexic and may inadvertently be transposing the dosage numbers. [CNN-AP, 6-26-06]
Transposing dosage numbers is probably the reason he got the job in the first place. Look at it this way, better he makes a mistake in this job and stays out of my HMO. What's he going to do, kill them too much?