What did they do? Probably some involved and esoteric sacrifice rite or omens. Did it work? Probably not.

Their religious habits and their fortune telling had a huge influence on everything they did and every time anything went wrong, somebody would claim because somebody else ignored or misinterpreted a bad omen or the holy chickens not eating.

Because due process and a good legal team on her side that tried everything there was to try.

Monoxide is the one that is dangerous because it makes you sleepy and then you die in your sleep. Dioxide is the one that feels like suffocating (because it’s literally the same. Your lungs can no longer get rid of the CO2 in your body and that’s very painful to us).

They have strong canaries in place, namely certificate transparency. They wisely designed themselves in a way to prevent themselves from tampering.