[adarsh_p]

The inverse of your example sentence would be something like - "I don't have a good immune system, so I would need medicine if I got a cold" - which makes sense, and is analogous to "Reality is not different, so we do need affirmative action."

[nostrademons]

The inverse of a proposition is not logically entailed by the proposition itself. You're looking for the contrapositive, but the contrapositive of his example is "I need medicine if I got a cold, so I do not have a good immune system."

[adarsh_p]

Got it, thanks for the explanations!