Re: Probability in an infinite sample space



Robert Low wrote:

Han de Bruijn wrote:

But e = 1/n and that depends on n .

No, e is an infinitesimal. That's just a very small number,
remember?

Isn't e = 1/n just a very small number iff n is very large?

I thought that was my point. You're letting n tend to infinity
*after* you use your purported infinitesimal: but the infinitesimal
isn't defined until after you take the limit.

The infinitesimal is defined _before_ you take the limit. It disappears
_after_ you have taken the limit. It becomes zero then, remember? Don't
take limits with infinitesimals that have already vanished. Dangerous !

Hey, *you* are the one trying to define a new framework (infinitesimal
probabilities). The rest of us are quite happy to observe that standard
probability doesn't work here, and use a viable alternative.

Han de Bruijn

.



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