Again, that's an incredible amount of testing and cost to identify poop in a public sewer system rather than identifying literally anything else. How do you hav

Again, that's an incredible amount of testing and cost to identify poop in a public sewer system rather than identifying literally anything else. How do you have someone's DNA and identity but not their location? Who is this person that leaves no trace (financial, digital, social) except for feces? Like hypothetically yes, it's possible. But what real scenario could possibly make it even remotely feasible?