You don't need them, but friction matters. You can stay in touch via the postal service. That does not mean that newer mediums with lower friction and more capa

You don't need them, but friction matters. You can stay in touch via the postal service. That does not mean that newer mediums with lower friction and more capabilities do not deliver real value to people. Whether or not social media is a net positive, no serious person can argue that they do not deliver value to large numbers of people.