Some knowledge can be relayed viva voce while other thoughts need to be written in tome.
Farmer’s may use an almanac that fits in pocket, but how to manage a phynnodderee’s legend requires an epic number of chapters.
A new mother’s tips are too many to remember, so a book about antibiotics, biggins, and cribs is a necessary referential read.
Carpet samples may suffice as squares on string. A complete list of polychromatic options, though, may need to be displayed in a two-handed manual.
While all that is experienced and learned may be in the mind indeed, pulling back levels of consciousness may never be as easy as turning over cover for a read. ; )