for - adjacency - Euler's Identity - book - Why the World Doesn't Seem to Make Sense - to - Google Books - Why the World Doesn't Seem to Make Sense - https://hyp.is/62BFDGCrEfCrMjc4k92e5g/books.google.com/books/about/Why_the_World_Doesn_t_Seem_to_Make_Sense.html?id=tMDvKl8anacC - This book takes a similar approach and makes use of duality represented by real numbers on the real number line, embedded within the complex plane

they provide a broader definition of sacred/holy texts that extend to books which form the basis of a groups' identity and often involve orthodoxy.

relation to politics, gender identity, cults, etc.

https://analogoffice.net/2022/10/28/a-life-in.html

@Guy Reminds me instantaneously of this collection of farm themed pocket notebooks which inspired Field Notes: https://fieldnotesbrand.com/from-seed 📓

Books represent a dichotomy in being both intensely private and intensely social at the same time.

Are there other objects that have this property?

Books also have the quality of providing people with identities.