Digest — In an extended interview, Leigh Ledare speaks with Paul McCarthy on abjection, paternal scale, and the endurance of the obscene in American art—less biography than structure, less scandal than symptom. Also in this issue: Sara Lopez on Psychobiography — Diane Arbus, style read as repetition; and Vaia Tsolas on Acute Optimization Disorder, a provisional condition for those unable to stop improving themselves.