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> what happened to the 5th person?

They weren't convicted. I feel like the fact you weren't able to figure that out suggests I need to work through this example a little more slowly in the hope you can follow:

In the village of Example there are one hundred people, that's too many for me to name so I'm just going to number them E00 through to E99.

It so happens five of these people have stolen some candy, with our god view of the world we happen to know that it's E09, E14, E43, E44 and E90, but this information is not available to the other Example villagers or to a prosecutor, judge etc regardless of whether they live in Example. We have this god view, they do not. No real world prosecutors know for sure who committed which crimes and in many cases it's even unclear whether a crime was committed.

In system A, three people are convicted, and they are, let's say E14, E44 and E90, they are actually all thieves.

But in system B, four people are convicted, they're E09, E20, E43 and E90. Unfortunately E20 wasn't a candy thief, we know that with our god view.

I claim that system A is better than system B. Your claim was that system A isn't better because, apparently you feel that a better system must catch more of the thieves, and you've offered no argument for that beyond that you don't seem to see a difference between "more" and "not less".




Hold up...

> apparently you feel that a better system must catch more of the thieves, and you've offered no argument for that beyond that you don't seem to see a difference between "more" and "not less"

Where did I say or imply that.

I asked if other countries were doing things that could [X=reduce false positives] and [Y=reduce false negatives]. That's not presenting an argument. If there are ways to reduce false positives without necessarily reducing false negatives, I didn't ask for those, though, it'd be interesting for discussion.




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