IF is a word which makes condition and which contains in itself potential possibility to determine something which could happen. IF remind us on something which as an accidental sizes of known probability establishes the probability of complex accidental sizes. What is accidental is not casual, but this doesn’t mean that is out of sense.

According to mathematics’ defined theory of probability, if there is no estimated number of independent events, which with the same probability could happen, then the probability that the very event will take place, that one which is favorable, is equal with the coefficient of the numbers of favorable events (m) against numbers of probable events (n), so p= m/n.

During throwing the die, it is probable to appear sides with numbers from one to six, so the probability that the number two would appear is 1/6, but that still doesn’t mean that in six throws the number two would appear, but that the probability will be the bigger the often is the number of throws. The size of probability get the value from 0 to 1 which does not mean that some event is impossible to happen. For example: if there are only white balls in one box and there are only black balls in other box, the probability that the red ball will get out is 0 (p = 0/n), but if there are only white balls in one box, the probability of getting out the white ball is 1 (p = n/n). This kind of probability is valued only in limited collectives, unless in the collectives with endless number of individuals, in spite of the fact that the probability is 0, it is always possible to happen an impossible event.

The probability is moving between  -~  to  +~, and that open the possibilities of unlimited treatment of all events which are happening after previously defined IF.