This is your most enjoyable essay yet. While I’m far more skeptical than you about our prospects for ever encountering or engaging with an extraterrestrial civilization, and I have no interest in a casual stroll on Mars while the Earth burns up, I fully share your insights into the recurrent pathology of tribal hatreds that afflict us as social primates, and hence the ongoing need for Tikkun Olam, especially now, as fascism seems to be gaining a foothold in our political culture.