ABSTRACT
The motto inscribed on the banner of modern science has been “Test by experience.” This was the salient point in the warfare of scientific method with systems resting on self-evident first principles, and with the whole intuitive approach. It is the point stressed in popular controversy. And the role of experience is indeed pivotal in the scientific process. It provides the basis on which, as we have seen, hypotheses are confirmed or rejected. The insistence, therefore, that no hypothesis is intelligible unless it is translatable into definite consequences in experience is fundamental to scientific method. It must have testable consequences, i.e., its logical consequences must state possible observations.
