If you’ve lived within 20 minutes of a friend versus 2 minutes of a friend, it’d be immediately obvious how irrelevant “only 18 miles” and “within an hour” are.

Someone 45 minutes away might as well require a flight, as far as I’m concerned

It's like that thing about radio waves. I proposed the inverse square law on friendship versus temporal distance.

I agree. You could say temporal distance out of sight squared = amount out of mind.

(I know that's not the real inverse square equation just having fun)