Nature is logical because elemental logic has been implicitly abstracted from natural processes. The symbolic representation of logical statements shows a "form" that logicians have long believed to guarantee the truth of statements. This is most applicable to deductive logic in which the conclusions are implicit in the premise. In contrast, inductive logic cannot be formalized and is inferred from many specific observations to make a general hypothesis, whose validity can be tested. This is the essence of the scientific experimental method and presupposes the uniformity of nature. Inductive logic is the product of our intelligence and capacity to observe, describe, and encode natural phenomena in our brain, a view that philosophers and logicians have traditionally dismissed. Drawing valid conclusions is a natural process that can be observed in preverbal humans and in animals.