Of the 3 books Sanderson is credited as having written, he wrote more of the first two than the final volume. A Memory of Light had significant scenes written b

Of the 3 books Sanderson is credited as having written, he wrote more of the first two than the final volume. A Memory of Light had significant scenes written by RJ himself. Sanderson had to contribute heavily to the first 2 he wrote to get story lines wrapped up to RJ's specs, and to get everything to converge to match RJ's existing passages for AMoL.