 If any of these alternatives are genuine possibilities for Spinoza, then he will not be committed to full-blown necessitarianism with respect to modes. Necessitarianism requires not only the necessity of the number of existents; it demands the necessity of each member and the necessity of all of its characteristics. Hence, even given POP and Ip16, it remains an open question whether Spinoza wants to deny that there are any alternative possibilities for modes. Am I really stuck with the exact shirts I’ve got, double-pocketed orange plaid and all?