ABSTRACT
The question to be discussed in this Chapter is one which, in my opinion, has been far too little considered. It is this: Assuming physics to be broadly speaking true, can we know it to be true, and, if the answer is to be in the affirmative, does this involve knowledge of other truths besides those of physics? We might find that, if the world is such as physics says it is, no organism could know it to be such; or that, if an organism can know it to be such, it must know some things other than physics, more particularly certain principles of probable inference.
