If C doesn’t want A to play music so loud, but it’s A’s right to do so, why should A oblige? What is in it for A?
Some (myself included) would say that A should oblige if doing so would increase total utility, even if there’s nothing in it for A self-interestedly. (I’m assuming your saying A had a right to play loud music wasn’t meant to exclude this.)
Some (myself included) would say that A should oblige if doing so would increase total utility, even if there’s nothing in it for A self-interestedly. (I’m assuming your saying A had a right to play loud music wasn’t meant to exclude this.)
How are you doing cross-person utility comparisons?