Rote learning is a memorisation technique. Repetition is a substitute for understanding the reasoning and relationships in the information. The exception to this general rule is the formation of an image which was discovered while watching people copy a design.
The diamond colouring in the ACLS-6 provides an opportunity to observe a person during the process of forming an image within ACL 4.8. There is tedious checking of the sample and colouring a section and checking and colouring and checking and colouring.