There's a zero-sum game in the war for attention. Each person only has 16-17 hours a day of attention to give. There is also a zero-sum game in the war for ho

There's a zero-sum game in the war for attention. Each person only has 16-17 hours a day of attention to give. There is also a zero-sum game in the war for how I choose to stay in touch with my friends. For each person, they are going to choose one or maybe two ways to do group updates.