As has been noted here by others, there are many reunion albums that are either desperate attempts to get attention, or, worse, attempts to cash in on nostalgia.  Two Against Nature is neither.  Two Against Nature is simply  about art.  It took Fagen and Becker 4-6 years to finish it.  It was surely  an overwhelming challenge, because the apparent goal was to out-do their  best work from the 1970s.  It's too early to say if they actually achieved  this goal (top Aja?  top Katy Lied?) but this is a more than honorable  effort.  They worked much, much harder than they needed to, if all they  cared about was the cash.  Two Against Nature is a sincere shot at  greatness.  The music is an evolution of their style, not just a rehash.  Some of the music is quite challenging to the ear (Gaslighting Abbie, the  title tune, Negative Girl).  There are at best 3 songs here that would work  on radio (and they're great, especially Cousin Dupree).  The lyrics create  all the puzzles that inspire lunatics to spend years parsing them (if you  don't believe me, check out the web site entitled "Fever  Dreams.")  And the music is sublime. I want to call attention to one  song on this album that will surely rank with their greatest moments. The  fast-paced closing song, "West of Hollywood" ends with a lengthy  sax solo by Chris Potter that rides over the most baffling, unpredictable  and thrilling series of chord changes I've heard assembled.  If you aren't  a musician, you don't know how difficult it is to solo over a crazy pattern  like this.  The attempt to make it work is typical of Steely Dan's  daredevil approach to music.  The fact that, in fact, it DOES work,  demonstrates their genius, and the genius of their associates.  If for no  other reason, this album deserves elevation for that song.