The criminal justice system simply moves too slowly and is constrained by too many “formidable procedural obstacles,” as Judge Posner put it, to reliably punish campus rapists and remove them from the academic community. Expelling a rapist isn’t an ideal outcome, because the offender remains on the loose, free to rape elsewhere. Expulsion is far better than no punishment at all, however. At least it spares the victim from having to live and study in close proximity to her assailant.
