1. Demonstrate that as an economist, you know your limits. As Russ Roberts writes:
Economics isn’t rocket science; it’s a lot harder. We should admit as much and when asked to measure things we cannot measure, we should admit our ignorance.
As an economist, you should be the biggest and best critic of your work.
Even when your work seems airtight, you should caution that you may be missing something.
You should invite criticism of your own work.
When somebody wants to use your work to justify policy positions, you should be warning them, rather than encouraging them.
You should be able to properly identify your own biases and tendencies.
Economists should take an oath similar to the Hippocratic Oath taken by physicians: First, do no harm.
2. Discussion requirements: You should be able to carry out discussions and debates without fallacy.
The persistent use of fallacy in discussion (rather than the occasional and willing-to-admit-it-when-pointed-out use) should be taken as a signal that you place a higher priority on what you believe is true than what is true.