Cashill is a genius. He did indeed blow the lid off Obama’s big literary scam/fraud. However, Obama’s true believers [we have one on this thread] would simply say that Cashill is mistaken.
Anderson, otoh, cites multiple sources who confirmed to him that Ayers wrote the entire book, Dreams. That may be one reason Leftist-Progressives don’t cite Anderson’s book much if at all; it makes their hero into a bumbling liar who not only couldn’t write his own memoir—he has pathologically taken credit for this one big accomplishment, which it turns out wasn’t his accomplishment at all.
Writers are often slow to express themselves in speech -- usually because they are searching for words with the precise meaning they want to convey -- but they are expressive.
Obama searches for words, too. But invariably comes up with cliches. Or mistakes. Or incoherent phrases. It's painful.
Besides which, didn't somebody run into Ayers in an airport, ask him about the controversy as to authorship...and Ayers admitted it was he who actually wrote the book?