Pragmatic Discordianism: No matter how exclusive you make the invites, Lady Discord will always show up to your party in one form or another. The pragmatic Discordian looks for ways to make the best of it (as opposed to pretending she doesn't exist or erecting "No Drama Permitted" signs.)
Pessimistic Discordian: Everything is false, meaningless, or inconsistent in some sense.
Optimistic Discordianism: Everything is false, meaningless, or inconsistent in some sense, especially Pessimistic Discordianism.