Kevin Volpp,director of the University of Pennsylvania's Center for Health Incentives, says these programs make it easier to take that first step to change.

VOA: standard.2010.07.16

So which changes in bodies make for a different body and which changes in a body ? makes change for the same body?

因此肉体的哪些变化,会改变原来的肉体？，哪些变化,又会保持原来的肉体？

耶鲁公开课 - 死亡课程节选

For example, if it's more convenient should you change the environment to make the unhealthy food less convenient and make healthy foods more convenient?

举例来说,如果是因为方便,那你改变外部环境,会使得健康食品比垃圾食品更容易获得吗

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选