The fact of the matter is, demon theory doesn't do a very good job of explaining disease, while germ theory does do a good job.

事实上,恶魔理论并不能很好地解释疾病的问题,而微生物理论却能将问题分析得很透彻

耶鲁公开课 - 死亡课程节选

We've got, roughly, germ theory and we've got demon theory.

把它们概括一下,微生物理论和恶魔理论

耶鲁公开课 - 死亡课程节选