After a certain point I think someone can learn enough information to derive almost everything from first principles. But I think it might work temporarily.

There's a movie about this idea called "Eternal Sunshine of a Spotless Mind".

I find it hard I believe that you can surgically censor one chunk of information, and cut off the rest of the information. Especially if it's general physical principles.

I also don't have a nice topological map of how all the world's information is connected to the moment, so I can't back up by opinions.

Though I'm still rooting for the RDF/OWL and Semantic Web folks, they might figure it out.