> >Pick one. Can't be both. > Pick what? Arbitrary or unrealistic. Utterly obvious from context; you said "arbitrary and unrealistic", they replied "pick one

> >Pick one. Can't be both. > Pick what? Arbitrary or unrealistic. Utterly obvious from context; you said "arbitrary and unrealistic", they replied "pick one or the other". Somewhere else you write about "if you only understood what I wrote". Honestly... This shows that the problem there wasn't with someone else's understanding of English, but yours.