Familiarity breeds contempt, goes the old saying. What a colossal falsehood. Familiarity is the only thing that will save the planet and its people from terrorism, ethnic cleansing, racial wars, religious wars, land disputes, gender hostility, gay phobias, nationalist fevers, and the thousand and one other prejudices and wedges that have for so long served to divide humans as if they were different species doomed to devour each other as part of the natural way of things. Crossing borders of all kinds—whether geographic, cultural, racial, religious or whathaveyou—is always and everywhere the precursor to understanding, acceptance, and appreciation of others,…