Hang on a moment. What are these generalisations about being
careless? I imagine he will soon be trying to produce some evidence for
this
libellous assertion.

Be my guest:

http://www.chesshistory.com/winter/extra/keene.html

http://www.chesshistory.com/winter/extra/copying.html

....and many, many more examples could be given. To say that you are a
careless author is about as much as a "libel" as saying that the sun
rises in the east.

His evidence so far is that I admit to having
written a book in a few days. This is true, but it was not by choice.
Also I had been thinking and writing notes for weeks in advance.

Wow! You actually spent a few WEEKS thinking and writing notes about
the book! I'm impressed.

Of course, some fools believe that just "thinking and writing notes"
for "a few weeks" is not enough, and that a good book usually requires
months, if not years, of collecting and shifting through primary
sources. But what the hell do THEY know.