Plenty is doing.
"Following the logic of Flynn's (1990) argument -that from tiny improvements in item pass rates we can infer massive secular gains-it could be deduced, by analogy, from tiny annual percentage increases in household expenditure on bananas that we have all enjoyed massive annual percentage pay rises."
Disclaimer: this quote appears here only to spark discussion. It is not endorsed one way or the other. Make up your own mind. Or just refresh the page for another viewpoint. From a collection assembled by the late Chris Brand.