Learning from mistakes is a well-known mantra and Oracle Team USA skipper Jimmy Spithill often talks about how top sport is really about overcoming adversity.
But Oracle do not seem to have taken on board the lessons of the past and how their adversity was replaced by more adversity in the 34th America's Cup - and the 32nd... and the 31st.
The American-based syndicate dropped their tactician John Kostecki after the San Francisco native committed a blunder. He was replaced by Ben Ainslie who made this difference to proceedings: none.
Ainslie is a brilliant skipper - even Spithill calls him the "best sailor in the world" - but manning the wheel of the AC72s is different from being a tactician. That sailor calls the tactical moves, watches for wind shifts, keeps an eye on the opposition and plots a course through San Francisco's tides and currents. He also lends a hand on the grinders, helping to power the boat through the hydraulics.
Ainslie's unfamiliarity with the role showed in Races 6 and 7. He performed well enough for the most part but Oracle called a split in Race 6 which effectively sealed their fate; such a call is usually the province of the tactician.