I read it once. My impression was that a second reading would be required to get it. He wrote of consciousness in an unconventional way.
That book seems to impress whether or not it's accepted.
Without doubt it was a good book, even though in later years Jaynes largely recanted the book’s central thesis. It also tops the list of the most deliciously pretentious book titles of all time. When it came out in 1976 you just had to read it so you could name-drop the title into casual conversation. :)