Re: [obm-l] Paradoxo do teste surpresa

2007/1/31, Nicolau C. Saldanha <nicolau@mat.puc-rio.br>:

On Wed, Jan 31, 2007 at 11:59:40AM -0200, Fernando Lukas Miglorancia wrote:
> Brilhante resposta e mais brilhante ainda o paralelo traçado- muito
> obrigado, Nicolau!

Obrigado pelos elogios, mas se o assunto é do seu interesse não deixe
de fazer a busca pelo google que eu sugeri. O que eu escrevi é mínimo
comparado com o que muita gente séria já escreveu e pensou sobre o assunto.

Uma citacão:

The story described above is the well-known Surprise Test Paradox,
also known as the Class A Blackout, the Hangman Paradox, the
Prediction Paradox, etc. It was circulated by word of mouth in
the 1940s, and was first discussed in print in 1948 [OC]. Interestingly
enough, the first few authors who discussed it viewed it simply as an
example of a statement that could not be fulfilled, and were unaware
of the potential "twist" at the end. It was not until 1951 that Scriven
pointed out that the teacher can give the test and surprise the students
[Sc]. Since then, numerous authors have discussed the problem and
presented solutions, although none apparently definitive. (See [Ga]
for an eminently readable introduction to the paradox, and [MB] for
a thorough survey of the literature, with a bibliography listing 40
papers).

JOSEPH Y. HALPERN AND YORAM MOSES
TAKEN BY SURPRISE: THE PARADOX OF THE SURPRISE TEST REVISITED
Journal of Philosophical Logic 15 (1986) 281-304.

Alguns links:

http://en.wikipedia.org/wiki/Unexpected_hanging_paradox
http://plato.stanford.edu/entries/epistemic-paradoxes/
http://findarticles.com/p/articles/mi_qa3742/is_199801/ai_n8774321

[]s, N.
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