Put them in a small sealed room with airflow you control. Using a randomly generated number to pick the start time (within some maximum that’s deemed appropriate), you then throttle up the nitrogen and throttle down the oxygen.
The time spent in the room would still be pretty terrifying so I doubt it’d be much better than the mask… Maybe the room is their cell and it’s a randomly chosen day within an execution “week” where you make sure they’re asleep first?
Probably best just to not kill people of course, but if you’re gonna do it, do it the most humane way possible.
Thought experiment:
Put them in a small sealed room with airflow you control. Using a randomly generated number to pick the start time (within some maximum that’s deemed appropriate), you then throttle up the nitrogen and throttle down the oxygen.
The time spent in the room would still be pretty terrifying so I doubt it’d be much better than the mask… Maybe the room is their cell and it’s a randomly chosen day within an execution “week” where you make sure they’re asleep first?
Probably best just to not kill people of course, but if you’re gonna do it, do it the most humane way possible.