Admiral Bacon of WW1 Dover Patrol was asked why he had not instituted a defence measure in the Dover Straits earlier. He quotes 'The answer proposed by Lord Fisher to the parliamentary question asking, "If the new scheme of naval education was a success, and, if so, why it had not been instituted before," applied to this case. His answer was: "The reply to the first part is in the affirmative. With reference to the second part, the same question might be addressed to the Deity as regards the Creation.'" Oh for such a turn of phrase.