I understand now that boundaries between noise and sound are conventions. All boundaries are conventions, waiting to be transcended. One may transcend any convention if only one can first conceive of doing so.
Madness string 24516
What most people fail to grasp about etiquette is that at its core, it's all about making people as comfortable as they can be. Sure, there's a lot of pretension added onto that core concept with the fussy rules, but etiquette and good manners are really just a social lubricant that's there to make socialising as smooth and easy as possible for all parties.