A book you might also want to read is The World Brain by H.G. Wells which is about a world encyclopedia. https://gutenberg.net.au/ebooks13/1303731h.html I believe it would take something similar to a multi zettabyte vector database attached to a knowledge graph of all the content on the internet and available content in universities and libraries to build a universal taxonomy. Artificial intelligence with human oversite would be used to create a self organizing map based on existing taxonomies like the Universal Decimal Classification or Library of Congress. It would fill in the holes of the existing system. A book you might also want to read is The World Brain by H.G. Wells which is about a world encyclopedia.
I believe it would take something similar to a multi zettabyte vector database attached to a knowledge graph of all the content on the internet and available content in universities and libraries to build a universal knowledge graph that would house the totality of human knowledge.
This is not a traditional classification system. The taxonomy and organizational structure would come out of the database which would modify existing classification systems. It would be like a universal library, but it would not have walls or physical limits.