Young argues that there is no doubt about the existence of "energy"; the real challenge is how to measure the invisible, non-measurable energy transfers using objective scientific experimental procedures and then use numerical methods to express them.
楊定一則表示，「能量」的存在無庸置疑，只是如何把看不到的、量不出來的能量轉變，依客觀的科學實驗程序操作測量，並用數字化的方式把它表達出來，確實是一個挑戰。