n 1636, according to an 1841 account by Scottish author Charles MacKay, the entirety of Dutch society went crazy over exotic tulips. As Mackay wrote in his wildly popular, Memoirs of Extraordinary Popular Delusions and the Madness of Crowds, as prices rose, people got swept up in a speculative fever, spending a year’s salary on rare bulbs in hopes of reselling them for a profit. Mackay dubbed the phenomenon “The Tulipomania.”