Prosperity is constituted by consumer and producer goods that people actually desire for use in satisfying their ends.

FORBES: Since Monetary Spending Is Unequal, Who Spends Wisest?

It was first proposed 87 years ago by Irving Fisher, an American economist who believed that policy makers should try to stabilise a broadly defined price index which included asset prices such as shares, bonds and property as well as the prices of producer and consumer goods and services.

ECONOMIST: Should central banks try to target asset-price inflation?