How exactly is that a non sequitur? It should be evident that if you jail the innocent party, the guilty party would still be at large, case closed, authorities would no longer be looking for them.

The whole premise of this one or the other thing is flawed. You can increase conviction of the guilty while also protecting the innocent depending on the procedures taken. The "how" matters at lot. So when you ask people stuff like how many guilty men should go free, it's a complete farce that is easily manipulated based on how you pose the question, methods, and outcomes in the fictional scenario. It takes away focus from the actual policies/solutions.

Edit: why disagree?