evidence: The ship’s sinking still captivates imaginations, as both a genuine tragedy and a near-perfect metaphor for humanity’s hubris. Ever since the luxury liner went down, conspiracy theories have clung to it like barnacles. One elaborate theory says the 46,000-ton vessel was switched with its sister ship, the Olympic, in a convoluted insurance scam, a fake iceberg collision that went horribly wrong. [...] Supposedly, the conspiracists say, Morgan canceled his Titanic trip at the last minute before the ship’s April 10, 1912, departure from Southampton, England. Then Morgan somehow had the ship sunk, killing 1,503 of its 2,224 passengers, to get rid of Astor, Straus and Guggenheim.