Richard William Costolo was the CEO of Twitter from 2010 to 2015; he also served as the COO before becoming CEO. He took over as CEO from Evan Williams in October 2010.
2 books on the list
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@mikeindustries Read this excellent opposing view (of pinker generally and his previous book specifically) by John Gray (english philosopher, author of the fantastic "straw dogs, thoughts on humans and other animals") – source
Kim Scott's excellent "Radical Candor" book is out (Kim built the "Managing at Apple" course at Apple University) – source
Also recommended byKelly Vaughn