To say that "ought implies can" is to say that you can be held responsible for not doing something only if it was possible for you to do it.

Question

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The principle "ought implies can" suggests that for someone to have a moral obligation to do something, it must be within their power or ability to do it. If an action is impossible for a person to perform, they cannot be morally obligated to perform that action.

To Say That "Ought Implies Can" Is to Say That