What passes for DNA matching in U.S. courts is about as fit for purpose as &quot;lie detectors&quot; or &quot;breathalizers&quot;. When the purpose is enabling police and prosecutors to put people behind bars with impunity, and justice being &quot;seen to be done&quot;, they fit quite well.<p>I&#x27;m not quite sure if the situation around the world is much different, but I would believe that we&#x27;re a little more sane in Europe when it comes to admitting evidence based more on witchcraft than solid engineering.