Question

Any collection of possible outcomes, including the entire sample space Ω and its complement, the empty set Ø, may qualify as an event. Strictly speaking, however, some sets have to be excluded.

Answer 1

what is this exclusion?

Answer 2

most text I've read so far only describes the uncountability, which I think apply to this exclusion.

Answer 3

There is an answer in a footnote here:
http://athenasc.com/Prob-2nd-Ch1.pdf

Answer 4

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