Michael Pollan in the introduction to his Food Rules: An Eater's Manual has a take on policy that can be generalized from the case of rules applied to eating. He writes:

Policies are useful tools. Instead of prescribing highly specific behaviors, they supply us with broad guidelines that should make everyday decision making easier and swifter.
And so one weighs the seven word formulation of "Eat Food. Mostly Plants. Not too much." against the simpler "Eat less." The one (seven words) is a condition to aspire to; the other, depending upon weight, is the route to equilibrium.

And so for day 769