As other people have said, the author is not criticising them herself.<p>However, I think your statement is strange. Firstly, she states that &quot;working class&quot; generally means &quot;without college degree&quot; - that doesn&#x27;t mean physical work. Secondly, knowledge workers also get diminishing returns from longer hours, potentially with even more dramatic effect. Thirdly, many common non-physical working conditions are also extremely tiring mentally and damaging physically in the long-run. Finally, you&#x27;re implying that child-care is not physically exhausting.<p>My impression of your response is that it has more slurs than the article, to be honest - just re-inforcing the primacy of manual labour. I have the impression you know what it&#x27;s like to work long hours in a stressful non-physical environment, so I find that odd.