Britain's vote to leave the European Union should serve as an important reminder for the leaders of all democracies with aging populations: Pay more attention to what older folks think, and learn how to communicate with them.

Of all age groups, people 65 and over voted most overwhelmingly in favor of Brexit. This demonstrates that seniors have a unique set of interests and understanding of economic trade-offs — all of which policymakers ignore at their peril.

Consider, for example, how governments respond to economic shocks, such as the potential fallout from Brexit. Economists typically advise them to rely heavily on central banks, which seek to support growth and keep inflation near target primarily by taking actions designed to lower interest rates.