150, Dunbar’s number, is the natural size of human social groups
Natural size of a conversation group is 3.8 people (one speaker plus 2.8 listeners)
One could argue that writing is a state of being in conflict—with oneself, with one’s subject, with one’s government, or with one’s community. But the unconscious impulse to write comes before the word, and it does not always take the form of language. Everything that follows—in how we traditionally conceive of writing—is an attempt to capture that compulsion, to make approximate marks that convey our thoughts to others.