Does 'The only thing I know about Gilbert is that I find him listed as co-author of Muskrat Ramble .' stand in direct opposition to the premise 'The only knowledge I have about Gilbert is his co-authorship of Muskrat Ramble.'
The only thing I know about Gilbert is that I find him listed as co-author of Muskrat Ramble .###The only knowledge I have about Gilbert is his co-authorship of Muskrat Ramble.