Egerton Castle,
1911 Encyclopædia Britannica, Volume 10…
(1911)
“ The mutual simultaneous hit—the coup-double—is, in fact, the dread pitfall of all sword-play. For this reason, in courteous bouts, a hit has no real value, not only when it is actually cancelled by a counter, but when it is delivered in such a way as to admit of a counter. In short, the experience of ages and the careful consideration of probabilities have given birth to the various make-believes and restrictions that go to make sound foil-play. ”
