This is similar to the first problem I asked (you might not have seen it) but with a twist. You have been kidnapped by a stranger you know nothing about. Presumably, they don't care about life because they want to play a game. They place down two cups. One in front of you, and one in front of them. There is a drink in both. Neither, however, is poisoned. They also hand you a vial of poison. They ask you to poison a cup while they don't look. Then, they have the opportunity to switch cups with you. You both will drink the cup in front of you (you first). (For reasons, don't try to engineer the situation and find a loophole, just try to predict what they would do)
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