Conventional wisdom, those wrongheaded comments that sound authoritative, is flourishing. Much comes from seeing gross domestic product as the measure of economic success. As Japan’s GDP has grown slowly this has led the unreflective to assume that the country’s performance has been poor. As readers of this blog will know, this seems to me to be nonsense. GDP is a fair measure of a country’s economic power, but changes in GDP per head provide a better guide to the progress of a country’s welfare and GDP per person of working age is a better guide to the success of economic policy. The number of Japanese aged 15 to 64 has been falling and this has limited the country’s ability to expand its GDP. If the changes in GDP per person in major developed countries are compared, Japan stands out for its success rather than its failure.
I am by no means alone in pointing this out; the former Bank of Japan governor, Masaaki Shirakawa has also regularly done so. Judging, however, by comments in the financial press we seem to have been talking to brick walls. The damage done from seeing GDP as a valid measure of economic success has been magnified by an association that is commonly made between low growth and deflation. It is widely believed that Japan’s economy has performed poorly and that this has been caused by deflation. It would be more reasonable, though not much more, to praise deflation for the relative success of Japan’s economy. Read more