'Brace for turbulence': Silicon Valley VC firm Sequoia Capital calls coronavirus the 'Black Swan of 2020' that every startup founder needs to prepare for

· Sequoia Capital, the prestigious VC firm that famously warned startups about the 2008 financial crisis, published a memo on Thursday urging startup founders to prepare for business disruptions.
· The memo was titled "Coronavirus: The Black Swan of 2020," a reference to an unpredictable, game-changing event. 
· "It will...