>the other 9 candidates who are waiting in line don't want that [to wait for the first candidate to contemplate the offer]

If any of them have other offers, they might appreciate _some_ extra time to decide between them.

EDIT: Nevermind the previous bit--I was still thinking in the context of multiple simultaneous offers, which I guess is not a thing.

And if not, then if the first choice turns it down, you make an exploding offer to the second (to be fair to the next 8), and again to the third (to be fair to the next 7), etc. Is there ever a situation where an exploding offer is not in everyone's best interest?