Syllogism & Venn Lab

Build any of the 256 categorical syllogism forms, name your terms, and watch the Venn diagram, the seven rules and the verdict update live. Then switch to Draw it yourself and diagram the premises on your own.

Choose an example

Minor term S

Major term P

Middle term M

Figure (where the middle term sits)

Mood (the type of each proposition)

Major premise

Minor premise

Conclusion

Predict first: hide the verdict until I decide

Venn diagram

shaded = empty ✕ at least one member ✕ on a line = side unknown what the conclusion needs ✕ assumed to exist

Highlight what the conclusion needs Traditional reading: assume every class has members

The argument

The seven rules

Distribution

Try Existential Fallacy, then tick “Traditional reading” and watch the verdict change. Or turn on “Predict first”, hit 🎲 a few times, and see how often your instinct is right.