Take the Chinese theory of channels and collaterals. Some say this traditional medical theory is the "study of energy paths" or channels of the human body that are able to determine life and death, treat diseases, and adjust deficiencies and excesses. Thus, they must be kept open. But the science of anatomy has been unable to demonstrate the existence of these channels and collaterals.
以中國的經絡學說為例，有人說，傳統經絡學就是人體的「能量通路學」，能決死生、治百病、調虛實，因而不可不通，但卻無法以解剖的方式來證明經絡的存在。