That's what I'm trying to figure out -- whether the standard productivity definition uses physically grounded measures (like how much skyscraper floor area can

That's what I'm trying to figure out -- whether the standard productivity definition uses physically grounded measures (like how much skyscraper floor area can be built per year or per full time employee, how many bytes of DRAM are manufactured per year or per full time employee...) or just money-units. In the latter case building skyscrapers at much higher costs than in the past might count as increased production, as long as you can get people to pay the higher prices. That seems backwards to me but I'm trying to temper my reaction until I learn more from people with a deeper economics background than I possess.