Eclipse

"That was a hand ball, ref.  Are you blind?"  Why didn't the referee call that?  Short of not seeing the foul (it's possible he or she was looking somewhere else or were screened by another player), the referee has made a judgement that, in his or her opinion, it was not a deliberate touch of the ball.

The laws contain many phrases like "If, in the opinion of the referee, . . . " or "at his discretion . . ."  The laws make the referee the sole judge in soccer.  Judgement calls (for example, if a player was tripped or if they just fell down) are based on the judgement of the referee, not the opinion of the coach, players, or spectators.