Chamath Palihapitiya, billionaire founder/CEO at Social Capital
"You are being programmed." re: the dopamine addiction that is intended to hook you into increased engagement and dependence, by the social media companies, such as Facebook where he was an early executive.
There is a lot to learn from this hour long video interview at Stanford in 2017. Take notes, it goes fast.
After the video, check him out on Quora.