From the “Friendship Explainer,” a definitive step-by-step guide to understanding the fundamental mechanics of friendshipModern friendships can be painfully ambiguous. But they don’t have to be. Journalist Anna Goldfarb has your back. “It’s understandable if your friendships are floundering. You’re up against historically new forces that we, as a culture, have no precedent for navigating,” she says. With Modern Friendship, Anna shares a manual for understa...