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A comment on My dad launched the quest to find alien intelligence. Parent comment

Re:My dad launched the quest to find alien intelligence by juki on Monday June 22, 2020 @07:22AM (#23599055)
> There are infinite numbers between 4.0 and 6.0 but only one of them is a prime.

Primality only applies to natural numbers, so there can't be primes between 4.0 and 6.0. There is one between 4 and 6, but that's a finite range.

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Re:My dad launched the quest to find alien intelligence by solidasparagus on Monday June 22, 2020 @12:12PM (#23601858)
The concept holds. Perhaps the example isn't great, I'm not sure - but since when does 'the set of numbers between 4.0 and 6.0' not include the natural number 5?
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Re:My dad launched the quest to find alien intelligence by juki on Monday June 22, 2020 @01:11PM (#23602733)
That's a set of real numbers, and primality is not defined for real numbers, so 5.0 can't be a prime. The whole concept is just not applicable unless were talking about natural numbers, in which case the set is finite.
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Re:My dad launched the quest to find alien intelligence by solidasparagus on Tuesday June 23, 2020 @07:03AM (#23612343)
Who said it's the set of real numbers? I don't remember adding any notation that specified the set must be real numbers.
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