There's a nonzero chance that the celery in my fridge is harboring an existentially virulent and fatal strain of E. coli. At the same time, it would be completely insane for me to autoclave every vegetable that enters my house.
Sensible action here requires sensible numbers: it's not enough to claim existential risk on extraordinary odds.
Sensible action here requires sensible numbers: it's not enough to claim existential risk on extraordinary odds.