All bad photos are alike, but each good photograph is good in its own way. The bad photos have found their apotheosis on social media, where everybody is a photographer and where we have to suffer through each other’s “photography” the way our forebears endured terrible recitations of poetry after dinner. Behind this dispiriting stream of empty images is what Russians call poshlost: fake emotion, unearned nostalgia. According to Nabokov, poshlost “is not only the obviously trashy but mainly the falsely important, the falsely beautiful, the falsely clever, the falsely attractive.” He knows us too well.