Rush replied four days later, saying that he had "grown tired of industry players who try to use a safety argument to stop innovation and new entrants from entering their small existing market." He understood that his approach "fies in the face of the submersible orthodoxy, but that is the nature of innovation," he wrote. "We have heard the baseless cries of you are going to kill someone way too often. I take this as a serious personal insult."
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