I explained the concept in (5.1.1.5) Do not mind duplication and (Column) You may find a relationship later. However, I explain it again because it is important.
The phrase “pieces likely to be related” is intentionally used in a different sense from “related pieces.”
When organizing groups, we sometimes feel that two pieces are somehow related. This feeling is exploring far ahead of your rational thinking. The feeling is strengthened or weakened by other pieces. As your feeling goes strong, your mind wants to justify that.
Much later than the feeling, you may find the reason why those pieces are related. It is the time when your rational thinking has reached what your feeling have found.
The pattern discovery is subjective. We have a faster ability to find patterns than rational thinking. We should make use of this ability.