“What are we, anyway, at our best, but one small, persistent cluster in a greater ferment of human activity — still and forever turning toward, tuned for, the possible,” Adrienne Rich wrote in her classic Arts of the Possible while the field of counterfactuals was emerging in theoretical physics as the science of the possible. Everything that is possible is in some sense real, because behind every “what if” is the “if/then” of a causality tethered back to the first thing that ever happened — the inception of this particular universe with its particular set of permissions — and dominoing forward to what has not yet happened but is happenable in this very universe. Hope is the potential energy of reality. But it takes trust in the possible to release it. Card from An Almanac of Birds: 100 Divinations for Uncertain Days .…