Individuals often lack willpower or access to healthy food or convenient exercise facilities, and are surrounded by poor examples that encourage instant gratification rather than effort and restraint. And, on a broader, institutional scale, the money spent and the money to be gained do not belong to the same pocket.
但个人和社会均很少有根据这一认识行动者。个人通常缺少毅力或渠道实行健康饮食和身体锻炼，且周边充满了鼓励他们及时享乐的坏例子，缺少努力和克制的好例子。此外，从更广的制度性角度来说，花钱的和获得好处的并不是同一批人。