The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Bloomberg's[3] November 4, 2010 report on the public opening, corroborated by Wikipedia[2], dates Ferrari World's opening to that day.
Wikipedia corroborates the November 4, 2010 opening and confirms the 200,000 m2 roof makes it the world's largest indoor amusement park.
Bloomberg's contemporaneous report dates Ferrari World's public opening on Yas Island to November 4, 2010.
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