I'm suspicious of the 'adults should be able to deal with this' line of reasoning here. Who gets to decide how much distraction adults *should* be able to tolerate? It sounds like the 'you're just being oversensitive' derailing tactic: evading accountability for one's actions by shifting the blame onto they who have obviously failed as a person for not being able to tolerate. It's a content-free argument because it can be used to justify any anti-social behavior: if your face wasn't so sensitive, you wouldn't mind when it gets in the way of my fist.
And the rare emergency doesn't justify it in general, any more than the existence of people who physically can't walk justifies driving one's car a quarter mile to the grocery store to pick up milk.
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And the rare emergency doesn't justify it in general, any more than the existence of people who physically can't walk justifies driving one's car a quarter mile to the grocery store to pick up milk.