“Hospitality is both invisible and formidable — it surrounds you. You can find it at a rest stop on the highway, and miss it at the host stand of a fine-dining restaurant. You feel its presence, or you don’t.” The NYT’s Tejal Rao with an interesting examination of the question, What Is Hospitality? The Current Answer Doesn’t Work. (Full disclosure: If my neighborhood association would let me build a moat around my house, I would.)