The Weekly Warlock Wind-Up: Logic (answer)

Putting aside the hilarious pictures for a moment, you will recall that earlier this week my question to you was whether this statement was logically valid:

If pigs had wings, they’d fly.

Pigs don’t fly if the weather is bad.

If pigs had wings, the sensible person would carry an umbrella.

Therefore:

If the weather is bad, the sensible person would carry an umbrella.

The answer is after the break!

As Nassaya said in the comments, the logic is wrong – if the weather is bad, pigs don’t fly. Therefore we can’t work out whether or not they have wings, and so we don’t know whether or not to carry an umbrella.

The statement said that if the weather is bad we would carry an umbrella, but as has just been shown, we actually wouldn’t know.

Could you work it out?

Vel.

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