Kabbalists assign integers to the 27 letters of the Hebrew alphabet. In the ancient practice of gematria, Hebrew words are turned into numbers by adding their letter values. Letter values that are multiples of 10 may sometimes be reduced to those multiples before being added to the values of the remaining letters in a word. This contraction leads to differences in a few cases between the standard gematria values of the Sephiroth in the four Kabbalistic Worlds and those listed in the table in the next page. Rather than being seen as an error by the author, such discrepancies indicate that the standard values given in reference works are wrong in these particular cases because they ignore contraction when the letter values are added together. The need for this is indicated by the author's research into how sacred geometries embody these Kabbalistic numbers. That is why Kabbalists blissfully unaware of the sacred geometrical dimension of these gematria values have remained unaware that in one or two cases these numbers are not the simple sums of the values of the letters of the Hebrew word or words.