MagisterCultuum
Great Sage
It works pretty well if the goal is to kill people.
Not always though. Executions occasionally fail.
Wasn't the recent supreme court case on capital punishment related to a man who was given a lethal injection but survived, and reported excruciating pain?
The court ruled it was not cruel and unusual punishment to use that drug. Part of the reasoning was that the plaintive did not suggest an alternative method of execution that would be less cruel while also not being too hard for the jurisdiction to implement. Of course such alternatives do exist and could have been used, and it just seems lazy of the judges not to consider alternatives that the lawyers neglected to mention. Nitrogen Asphyxiation is the obvious choice for giving a painless death.