One econ idea that I think needs boosting in public discourse: externalities. [1] Of *course* the USPS doesn't pay for itself. It shouldn't. It should be subsidized by the public b/c there are positive externalities associated with having a public mail service.

Externalities [2]: In normal times, fares should not cover the full cost of providing public transit. We all benefit in myriad ways from having public transit, even if we don't ourselves use it. There are positive externalities. It should be subsidized by those benefiting (=all).

Externalities [3]: Letting the illness run its course generates negative externalities. In terms of spread, of course. But also in terms of the burden on medical workers & facilities. Or, ask a pregnant woman how she's feeling about going to the hospital to give birth.

Externalities [4]: Grocery stores. Look elsewhere to see what happens to social order when people can't buy food b/c it's simply unavailable. There are positive externalities associated with having food available and workers to stock shelves/sell it =>requires subsidies from all

Let's not get caught up in econ-speak and economist-to-economist convos. If ever there was a time when it was important that we speak clearly to the real world, this surely seems to be it. Empower your students to use econ to help others understand, to advocate, to effect change.