It is futile to ask if reading a book helps us, it obviously does .... only problem being ordinary human beings lack the ability reproduce the knowledge with 10

It is futile to ask if reading a book helps us, it obviously does .... only problem being ordinary human beings lack the ability reproduce the knowledge with 100% accuracy in the post reading stage. The question nonetheless is interesting because it makes you think which part of the communication channel (author to reader) is the reponsible for the information loss. Let's say the author has a good command over the language and accordingly can encode the X% of the information. thankfully the medium is not lossy, so the loss again happens at the reader end of the communication. Depending on the reader, this end can result from 0(throw away the book after a few paras) to X%. The reader end of the communication can be fixed only by the reader itself, solely by sticking to negotiating the protocols with multiple authors... i.e. read more to retain more. Makes you wonder is the platform (written text) broken? now it's really really old, and if you pick up a paper book - how much different it is than picking up an Indus valley clay tablet as far the intelligence of the medium is concerned. Shouldn't the reading medium work in the background to understand the reader's distance from the text and try to embellish the reading experience by making connections of the book with the reader's reading history?