Actually, they address this explicitly to some extent:
And it didn’t matter if they were rich or poor: People benefited from buying time regardless of where they fell on the income spectrum. (The authors note, though, that may not hold true for the poorest of the poor.)
Neither the NYTimes article or the research paper addresses debt. Nor does it address if punching yourself in the face increases or deceases happiness, nor if the lesser savings of someone who spends on a maid makes them miserable in 50 years time when they retire.
And it didn’t matter if they were rich or poor: People benefited from buying time regardless of where they fell on the income spectrum. (The authors note, though, that may not hold true for the poorest of the poor.)
Neither the NYTimes article or the research paper addresses debt. Nor does it address if punching yourself in the face increases or deceases happiness, nor if the lesser savings of someone who spends on a maid makes them miserable in 50 years time when they retire.