What if we built a device that could trace a particle from your car's exhaust and could tell you if that particle lodged itself in someone's lung at just the right moment to cause a stroke? Or how about a device that could trace the germs from when you skipped washing your hands for at least 20 seconds with a lather because you were late to your 1 on 1 with your boss, which then caused your elderly neighbor to catch an infection? Or what about sensors that could tell if your inadvertent non-intentional stink eye at someone with social anxiety was the trigger to push their mental distress beyond the point of no return? Or how about that coworker who you promised would be a hero for taking the vax, who then convinced their son to get it, who then contracted a heart issue soon after? Would you take responsibility for that?