My student has a question on Exercise 4 number 14. Her answer for was ~C ⊃ S instead of S ⊃ ~C. Can the statements “I will go swimming only if the water is not cold” be considered logically equivalent to “If the water is not cold, I will go swimming”?
Also, how can I explain the difference between “If the water is not cold I will go swimming” and “I will go swimming unless the water is cold”?
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