ABSTRACT
Experience is the only test of the truth of particular propositions concerning objects around us. Let us call the group of such objects physical, taking the word in its widest sense. We are taking physics as an entirely empirical science: it attains certainty or probability only to the degree in which experience verifies its findings. Its sole claim upon our credence is the exactness with which it tells us what we shall see, hear, and touch in accordance with what we have seen, heard, and touched. If that is not its only task, such is anyway the end by which it wishes to be judged. No one would object to the feasibility of analyzing physics and its claims of verification in relation to what is given to the senses.
