Nothing is as good or as bad as it looks. Reality is always somewhere in between. When you listen to 2 very conflicting versions of the same event from 2 different parties, how do you decide what to believe and what to dismiss? That's a tricky situation confronting us very often.
It's a dilemma without a solution. We are left with nothing but instinct and discretion to aid us in reaching a verdict which might sometimes be flawed and aberrant.