Truth through knowledge
I believe librarians should return to being the curators of information. To fulfill this role, they must undertake training and education to be knowledgeable of subject areas and their sources. Librarians should use this knowledge to build collections (physical or digital) of high quality, reputable resources. They should also be able to direct users to other well curated collections. Librarians who are unable to identify credible sources would be better off seeking a different career.