Scarcity:

Sendhil Mullainathan & Eldar Shafir:

>When we told an economist that we were studying scarcity, he remarked, "There is already a science of scarcity. You might have heard of it. It's called economics." He was right, of course. Economics is the study of how we use our limited means to achieve our unlimited desires; how people and societies manage physical scarcity.<