From PhilPapers forum Philosophy of Mind:

2009-05-13
The 'Explanatory Gap'
Reply to Stevan Harnad
SH: "No one is comparing something  to itself."

In relying on the Nagel dictum that "There is something that it is like to be a conscious organism", one is in effect comparing something to itself, as I explained earlier, because there is surely nothing it is 'like' to be conscious other than being conscious.

DA.