Corrected entry: When Teddy was administering CPR to his daughter in the lake, he used a method that was not in common use yet. The scene is set in 1952, but the rescue breathing method he used was only experimented with in 1952.
Twotall
21st Feb 2010
Correction: If the technique did exist (even if it was only experimental), there is a chance Teddy could have heard of it and/or seen it demonstrated.
Twotall