Here’s a key lesson of economics: Trade is good, but trade with people very unlike yourself is even better. I’m a teacher who eats beef, drives a car and lives in a house. I don’t need other teachers so much as I need students, ranchers, autoworkers and architects. If your neighbors love gardening as much as you hate it, you’ll find it easy to hire a gardener. If it’s the other way around, you’ll do well in the gardening business.
The lesson spills over beyond the markets for goods and services. We learn new ways of thinking and new ways of living from people who think and live differently than ourselves.
We thrive on diversity — diversity of skills, diversity of interests, diversity of lifestyles, diversity of religious and political outlooks, diversity of culinary and artistic tastes, diversity of lifestyles, and, lest we forget, diversity of income. Capitalists need workers and workers need capitalists. A wealthy factory owner won’t stay wealthy for long if here’s nobody to work the assembly lines. A middle-class assembly line worker won’t be middle-class for long if there’s nobody building factories.
Let us then celebrate diversity, not try to extinguish it. And let’s not forget that diversity of income — or, if you prefer, “income inequality” — is just as much a blessing as diversity of skills, preferences, cultural outlooks, and ways of living.