Being Confident Doesn’t Mean You’re Accurate And don’t squeeze those lemons. Thirty years ago this past January, McArthur Wheeler and Clifton Earl Johnson robbed two banks in Pittsburgh.They didn’t conceal their faces.Instead, they soaked them in lemon juice, convinced it would make them invisible to the security cameras.  (You might remember using lemon juice as “invisible ink” as a child – writing a secret message that appeared only when heated.)Obviously…