rooster, 5 reasons why anecdotes are totally worthless Posted on February 10, 2016 https://thelogicofscience.com/2016/02/10/5-reasons-why-anecdotes-are-totally-worthless/ Remember Oops, and - Columbine and Virginia Tech -- occurred despite the presence of armed police. https://investorshub.advfn.com/boards/read_msg.aspx?message_id=139428488 One case - your point - is not valid evidence, and is no valid basis for policy development or implementation.