Re: "He was found not guilty, therefore he is innocent"
"We have double jeopardy as well but a few years ago it was modified to allow for retrial if the evidence has significantly changed".
Just another of the myriad ways in which our old-fashioned and inefficient justice system is being continually revised, reformed and improved.
"Oh look - a gun that has been fired with the accused's fingerprints on it! How could we have overlooked that? And see - we have just discovered that his DNA was plastered all over the crime scene. Definitely grounds for a retrial".