The solution, in Keynes' own metaphor, is to persuade them that green cheese is nearly as good, and to have a green-cheese factory--a central bank--conveniently at hand.
A central bank conveniently at hand is the topic of Keynes' metaphor.
mnli hypothesis: A central bank conveniently at hand is the topic of Keynes' metaphor. premise: The solution, in Keynes' own metaphor, is to persuade them that green cheese is nearly as good, and to have a green-cheese factory--a central bank--conveniently at hand.