On 28 May 2012, at 18:11, Evgenii Rudnyi wrote:

On 28.05.2012 18:02 meekerdb said the following: ...Our intuition is that space is euclidean, the earth is stationary and flat, and that there is only one world. It seems to me that the infinity of arithmetic is just the intuition we should always be able to add one more. But intuition fails us in precisely in questions like Hilbert's hotel. Why should you be so trusting of your intuition is just this particular instance.On a side note. Has science has proved something on existence ofHilbert's hotel? If yes, where does it exist?

`In the model of set theories (called "universe" usually, but of course`

`they are not physical universe, a priori).`

`It exists also as object in naive set theory. Well "Hilbert hostel" is`

`just a trick to explain some statements about sets.`

Bruno

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