How to Invent Everything: A Survival Guide for the Stranded Time Traveler

by Ryan North

There are fifteen valid logical syllogistic structures you can produce, and we’re going to save your civilization years of hard-core logic and philosophizing by giving them to you right now: Major premise Minor premise Conclusion All M are P All S are M Therefore, all S are P No M is P All S are M Therefore, no S is P All M are P Some S are M Therefore, some S are P No M is P Some S are M Therefore, some S are not P All P are M No S is M Therefore, no S is P No P is M All S are M Therefore, no S is P All P are M Some S are not M Therefore, some S are not P No P is M Some S are M Therefore, some S are not P All M are P Some M are S Therefore, some S are P Some M are P All M are S Therefore, some S are P Some M are not P All M are S Therefore, some S are not P No M is P Some M are S Therefore, some S are not P All P are M No M is S Therefore, no S is P Some P are M All M are S Therefore, some S are P No P is M Some M are S Therefore, some S are not P Table 16: Valid logical syllogisms. This is something that took humanity thousands and thousands of years to puzzle out, and it all fits in a single 15×3 grid! Hooray!