Publishing executive: Our company must sell at least 100,000 books to make a profit this year.
Conclusion
It is unlikely that we will sell at least 100,000 books.
Evidence (since)
Of the twelve titles we sell, the one likely to be our #1 seller is unlikely to sell as many as 100,000 copies.
Evaluate
Given that ... our top prospect is unlikely to sell 100,000 copies How could we argue that ... it is likely that our company will sell at least 100,000 books?
We could say,
The author is thinking
In a sense, it feels like the famous Part vs. Whole flaw. That #1 prospect book is part of this year's suite of books. Since this Part won't sell 100,000 copies, the Whole year's worth of books won't sell 100,000 copies?
Goal
Look for an answer saying that cumulatively the sales of all the books together could still get us over 100,000 copies.