ABSTRACT
The experiments described in this chapter proceed in general very simply and somewhat in the same manner. The only possible origin for complex action is a great many fractions or parts of the whole achievement, which separately are quite natural to the animal; such "natural" impulses occur in great variety. This chapter discusses how in the case of a roundabout-way experiment a practical "result" consisting of single and separate fractions, put together by chance, is sharply distinguishable from "genuine solutions". The experiment is repeated with Chica, but this time the thread lies on the floor turned in the other direction. Chica made out of the jumping-stick method, which she had in its simple form completely mastered, a combination of this and the door-method; and quite unnecessarily, because it was by no means an improvement. The descriptions of these experiments have shown how unwillingly the chimpanzee embarks on procedure, of which the general outline will come to him as a genuine solution.
