The ambitious mission of Google is to organize access to the information of the world. It is one of the most successful company of the World. The idea that if one has access to the best knowledge of the world, you can become better citizen is a current utopia of humanity. This dream of universal access to Comprehensive knowledge is now driven by Google books, as more accessible collection than in the library. However, metadata in Google Books is quite a disaster. Also used standards are weak. Privacy is an issue! Preservation should be permanent process. And what can happen to Google company in 50 years? It is not an institution which can remains over time. The human knowledge project however is proposed by Google as a sustainable system based on technology. It is more than a collection of books.
Public domain want to be free and sustained by public taxes. It should be multinational and multilingual. Playesr as Unesco, libraries are the right actors in this project.