Modus ponens is a method of affirming the consequent. Modus ponens can be shown through these 3 propositions:
If (it’s raining), then (the sky must be cloudy).
It’s raining.
.*. The sky is cloudy.
I created a compound implication sentence. I affirmed that the first part of the sentence is true, which would logically make the second part true. That’s why the first proposition used in an implication sentence is called the antecedent, and the second one is called the consequent.
We can also write the sentence out in symbols, which we will now do by making the antecedent R and the consequent P.
R–>P
R
.*.P
And that’s really all there is to it!
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