"A few years later, Zuckerberg began setting annual tests of discipline for himself, vowing to wear a tie to work every day in 2009, learn Mandarin in 2010" We

"A few years later, Zuckerberg began setting annual tests of discipline for himself, vowing to wear a tie to work every day in 2009, learn Mandarin in 2010" Wearing a tie every day isn't really that difficult. I would also be interested to see if he's still learning Mandarin and how much he can actually speak. My guess is none.