But I can understand you'd need to now WHAT I am
No,
the "engineers" over here want to understand the delta between your book and what is already on the market.
engineers call it the difference
marketeers call it a USP
sales call it added value
venture capitalist would call it a secret
artists call it a new dimension
spock would call it interesting
kids would call it Wow
etc...
that difference (oops I'm an engineer) is the main question