I learned that economists measure everything in tangible units of production and consumption as if each of those tangible units is exactly the same.
من ياد گرفته‌ام كه اقتصاددانها هر چيزي را در واحدهاي عيني توليد و مصرف محاسبه مي‌كنند گويي كه همه آن واحدهاي عيني دقيقا مثل هم هستند.