Michael Wolff, the author of “Fire and Fury: Inside the Trump White House,” included a note at the start that casts significant doubt on the reliability of the specifics contained in the rest of its pages.

Several of his sources, he says, were definitely lying to him, while some offered accounts that flatly contradicted those of others.

But some were nonetheless included in the vivid account of the West Wing’s workings, in a process Wolff describes as “allowing the reader to judge” whether the sources’ claims are true. | Read more at Business Insider