Earlier this week, Google surprised the world with the launch of Alphabet, a parent company that will encompass a bunch of individual entities, including Nest, Sidewalk Labs, Calico, and a "slimmed down" Google. When Google cofounder Larry Page — who will become CEO of Alphabet while Sundar Pichai will steps us as CEO of Google — posted about the news on Google +, he made sure to reassure followers of the social network's future.