We know that investment causes growth. But it is also true that growth causes investment.

This relationship is the foundation for the argument, made by some trade unionists and labour advocates, that high wages can actually be "good for business". The precedent set by Henry Ford in 1914, who offered workers $5.00 per day (a very high wage at the time) so they could afford to buy the same cars they made, is often invoked.

If you want poor people to work you restore their incentive by giving them less, such as by cutting social services. If you want rich people to work you restore their incentive by giving them more, such as by cutting taxes.

Growth can also involve producing services instead of goods. In particular, a major expansion of public and caring services (like child care, education, elder care, and other life-affirming programs) would generate huge increases in GDP and incomes, with virtually no impact on the environment.

Try this: say the words "global, global, global" aloud several times, as fast as you can. You'll find yourself sounding like a turkey ("gobble, gobble, gobble").

With joint-stock corporations, investors can place bets on the success of many different companies, without having to play a central management role in any one of them. This allows investors to diversify their financial holdings. It also allows them to capture profits on their investments, without having to get involved in the dirty, troublesome business of actually running a company.

We know that investment causes growth. But it is also true that growth causes investment.