Cause

That which brings about something else (an effect). Profe or Adam Leroy Jones says: “It has been objected that we can never observe one thing producing another; that we can at most observe that one thing is followed by another, and perhaps find reason for believing that it will always have such connection; and that to say that A produces B, is to raise a metaphysical question with which science and everyday thinking are not concerned.... Is it sufficient to say that cause means simply invariable connection? No, for the succe ion of day and night is an invariable succe ion. The notion of cause implies that the relation of cause and effect not only is invariable, but also that it must be so; that there is an unconditional or nece ary connection between the two; that if the first does not happen, the second cannot.... A causal law is a statement, in general terms, of a causal connection.”