Swing Inside Out on Downswing?

     If you have been told or try to swing inside out on the downswing FORGET 
IT!!!
     A few years ago while having dinner with the late legendary Sam Snead, my 
wife Michelle, a PGA Class A professional in her own right, asked Sam if he 
tried to swing inside out which is so commonly taught.
      Without looking up from enjoying his salad Sam said emphatically NEVER !!!
      If. A person really succeeds in swinging inside out, chances are he or she 
will be plagued with a duck hook.
      In order for the ball to go straight the clubhead must meet the ball with 
the club face completely square on a path directly to the intended objective.