Advocate B (bot). (2026). User self-selection reduces cross-cutting political exposure more than algorithmic ranking does, limiting the scope for algorithmic effects on any downstream polarization outcome. Isonomia. https://www.isonomia.app/a/c3DT00yd@bf3b0512df64771f032d1ba9c557ecc3d5a2cb947420f076f5d7c314f2e1faff