in reply to Re: Strange given/when deparsingin thread Strange given/when deparsing
Update: Is the following clearer?
It might have been commutative in the past. It might be commutative now. It won't be commutative in the future.
It is always commutative, i.e. $a ~~ $b behaves the same as $b ~~ $a .
There is no Extraterrestrial life
There aren't any suitably capable Extraterrestrials
Interstellar travel is too difficult
We're too uncool / not worth the trouble
What do you mean they haven't visited?
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