在学校借过MTW的大书Gravitation,没看完,依依不舍复印了最后一章(Chap.44 Beyond the end of time)留念。最后一节有段话说:“Physics as manifestation of logic” or “pregeometry as the calculus of propositions” is as yet not an idea, but an idea for an idea. It is put forward here only to make it a little clearer what it means to suggest that the order of progress may not be physics to pregeometry, but pregeometry to physics.