Answer:> It has a great hook. [That’s “hook,” not “book.”]
> It teaches me something new.
> It’s the first. Or the best. Or both.
> The author has the self-promoter gene.
> It features a smart person writing on a fun subject.
> It’s similar—but not too similar—to books we’ve done well with in recent memory.
> It has crossover appeal to kids and adults, men and women.
> It’s quirky/surprising/memorable.
Comment: Any one or a combination of these characteristics can produce a winner, says the author. RayS.
Title: “Why an Editor Says ‘Yes’… to a Book.” Marian Lizzi. The Writer (June 2012), 30-31.