Extended analogy

The extended analogy denotes an analogy in which the similarity of the phenomena is inferred from the similarity in the causes. As z. For example, in the Middle Ages the similarity between the falling of bodies, the attraction of the moon by the earth and the planets by the sun was found, one suspected analogous causes for these phenomena.

An extended analogy is also present when conclusions are drawn from similar causes to similar effects. For example, similar considerations are made of the institution of serfdom in one country and its effects on the consequences of serfdom in the economy of another.