# A discussion of the two aspects of moores paradox

Old discussions[ edit ] How the hell is this a paradox worthy of discussion?

The Surprise Test Paradox A teacher announces that there will be a surprise test next week. A student objects that this is impossible: If the test is given on Friday, then on Thursday I would be able to predict that the test is on Friday. It would not be a surprise.

Can the test be given on Wednesday? No, because on Tuesday I would know that the test will not be on Friday thanks to the previous reasoning and know that the test was not on Monday thanks to memory.

Therefore, on Tuesday I could foresee that the test will be on Wednesday.

## Epistemic Paradoxes (Stanford Encyclopedia of Philosophy)

A test on Wednesday would not be a surprise. Could the surprise test be on Monday? On Sunday, the previous two eliminations would be available to me. Consequently, I would know that the test must be on Monday. So a Monday test would also fail to be a surprise.

Therefore, it is impossible for there to be a surprise test. We have an embarrassment of riches. For a recent formalization, see Holliday On the other hand, common sense says that surprise tests are possible even when we have had advance warning that one will occur at some point. Either of the answers would be decisive were it not for the credentials of the rival answer.

But a paradox of what kind? Specifically, a test is a surprise if and only if the student cannot know beforehand which day the test will occur. Therefore the riddle of the surprise test qualifies as an epistemic paradox. Paradoxes are more than edifying surprises. Professor Statistics announces she will give random quizzes: Each day I will open by rolling a die.

When the roll yields a six, I will immediately give a quiz.

So you are taking a quiz. The last question of her quiz is:Moore's paradox is that kind of absurdity of, among other things, the assertion of a sentence having the form of "p but I do not believe that p".

Could the surprise test be on Monday? On Sunday, the previous two eliminations would be available to me.

Consequently, I would know that the test must be on Monday. So a Monday test would also fail to be a surprise. inside the preface paradox is Moore’s paradox (all of which will discussed below). Epistemic paradoxes affect decision. Unlike most editing & proofreading services, we edit for everything: grammar, spelling, punctuation, idea flow, sentence structure, & more.

Get started now! Moore's Paradox - Contradiction and Philosophy How is sense distinguished from nonsense in the discussion of philosophical problems? .