The courts have ruled that executing an insane person is inhumane, so what they do now is begin pumping the lunatics full of drugs a few weeks before the execution date. By doing so they can make them lucid enough to comprehend that they're being murdered on a given date, which qualifies them as sane. Somehow that strikes me as being far more inhumane than allowing a person to remain in a state where they don't realise they're being murdered.