As the departing president well understood, in this world there is only incremental progress. Only the willfully blind can ignore that the history of human existence is simultaneously the history of pain: of brutality, murder, mass extinction, every form of venality and cyclical horror. No land is free of it; no people are without their bloodstain; no tribe entirely innocent. But there is still this redeeming matter of incremental progress. It might look small to those with apocalyptic perspectives, but to she who not so long ago could not vote, or drink from the same water fountain as her fellow citizens, or marry the person she chose, or live in a certain neighborhood, such incremental change feels enormous.