The article, part of a weekly series on navigating modern life's challenges, addresses a common commuter grievance: fellow passengers playing phone conversations and videos on speaker. Hardy describes the behaviour as "hugely rude".
"People are now treating public spaces like their own lounge rooms," Hardy said. She defines etiquette as "a set of standards and rules that we should follow in society, in life, in business, to make our days nicer and our relationships better."
Hardy believes manners are declining as people live faster lives hooked up to personal devices. "We've turned into a society of, 'It's all about me,'" she said. "We've got to come back to 'It's about everybody.'"
The column offers advice on how to politely ask someone to lower their volume, reflecting a broader concern about shared public conduct in Australia's cities.