100 serial killers escape each kills one innocent person => 100 innocent persons suffer
Fallacy Of Red Herring
My argument was that the possibility of wrongful convictions were an expressed concern during the formation of our judicial system making your argument against BF's general concerns non sequitor. The term "guilty" does not automatically mean serial killer, nor does a free serial killer necessarily kill again. But, the question is not about whether or not we should incarcerate, it is about whether or not we should kill after incarceration, given that a properly administered system may be impossible to guarantee.