Occam's razor. They are not 'scanning brain waves or some truly difficult method'. Not in this reality. You know it too. I didn't even have to suggest they buil

Occam's razor. They are not 'scanning brain waves or some truly difficult method'. Not in this reality. You know it too. I didn't even have to suggest they built an Arab detector for you to bring it up ;) I don't care about that hypothetical. Save it for your sci fi screenplay.