# Doug_S. comments on 0 And 1 Are Not Probabilities - Less Wrong

34 10 January 2008 06:58AM

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Comment author: 21 August 2015 08:24:39AM 1 point [-]

That seems a solid enough explanation, but how can something of probability zero have a chance to occur? How then do you represent an impossible outcome? It seems like otherwise 'zero' is equivalent to 'absurdly low'. That doesn't quite jive with my understanding.

Comment author: 21 August 2015 09:37:41PM 1 point [-]

Impossible things also have a probability of zero. I totally understand that this seems a bit unintuitive, and the underlying structure (which includes things like infinities of different sizes) is generally pretty unintuitive at first. Which is kinda just saying "sorry, I can't explain the intuition," which is unfortunately true.

Comment author: 22 August 2015 02:47:33PM 0 points [-]

I'm just going to think of it as taking the limit as evidence approaches infinity. Because a probability next to zero and zero are identical, zero then is a probability?

Comment author: 22 August 2015 12:07:25AM 1 point [-]

I think one of the clearest expositions on these issues is ET Jaynes. The first three chapters (which is some of the relevant part) can be found at http://bayes.wustl.edu/etj/prob/book.pdf.

Comment author: 22 August 2015 02:39:02PM 0 points [-]