A lot of people have no idea that right now Y.A. (young adult). is the Garden of Eden of literature.
Maybe if I go far enough back into my ancestry, I have African roots or something. I've got no idea.
I walk into the office at Southwark Bridge every morning, and I have no idea what's going to happen.
I had maybe heard 'The Times Are A-Changing' on the radio, but I had no idea who Dylan was. No idea.