ZK II note 9/8b 9/8b On the general structure of memories, see Ashby 1967, p. 103 . It is then important that you do not have to rely on a huge number of point-by-point accesses , but rather that you can rely on relationships between notes, i.e. references , that make more available at once than you would with a search impulse or with one thought - has fixation in mind.