I wasn't trying to get pre-trip beta from your book, i wanted to confirm the error before i posted the need for a major correction. I don't want to buy your book 
becuse it is aimed toward the easiest way to the top, which i don't typically need a guidebook to help with, and because you use this site to advertise for your book a lot.  
  
 
 
  
Following the above directions to get down from the lakes is the only time i've seen/used your book (my partner had copied the page and brought it with us). This route resulted in a wide impassible cliff band more than 200' high between the basin and the laks. See Paul Klenke's devore peak page on summitpost.org for the best way from the middle basin to the Bird/Devore lakes, or see my TR from mid august for an unapealing but doable Northern alternative to avoid these cliffs.