"I think the highest turnover job of any Silicon Valley executive position might be the CMO." Airbnb's @​bchesky says he has a huge amount of respect for peopl

"I think the highest turnover job of any Silicon Valley executive position might be the CMO." Airbnb's @​bchesky says he has a huge amount of respect for people in marketing because it's one of the hardest functions in a business. "Because once something works, it almost becomes stale. Because eve…