The advertisers who believe in the selling power of jingles have never had to sell anything.
The future lies in designing and selling computers that people don't realize are computers at all.
When buying and selling are controlled by legislation the first things to be bought and sold are legislators.
There are signs that the age of petroleum has passed its zenith. Adjusted for inflation a barrel of crude oil now sells for three times its long-run average. The large western oil companies which cartellised the industry for much of the 20th century are now selling more oil than they find and are thus in the throes of liquidation.