I Basic Philosophy
II Necessary Knowledge
III Productive Living
IV Autobiography
V Beauty
VI Art-Making
Appendix I: Picture Library
x objects in every possible order = x!
e.g. 5 objects = 5 x 4 x 3 x 2 x 1 = 5! = 120 possible combinations.
x = no. of variables
y = no./group
x!
y! (x - y)!
= number of combinations where each variable only appears once per group.
(x + y - 1)!
(x- 1)! y!
= number of combinations where variables can appear more than once in each group.