About the book: 2001 / “The Whole World of Knowledge” is a wide-ranging educational series. The authors - leading domestic and foreign scientists - provide the key to understanding the problems of modern science. Accessible, fascinating texts are designed for the widest audience and, first of all, for those who study and teach. One must be able to use reason, it must and can be developed, and this is taught by the only science - logic. Therefore, acquaintance with it is necessary for any person. An elephant is stronger than a man, a horse is faster, an eagle sees further and better. But reason allows man to immeasurably surpass them all in strength, speed, and vigilance..