That&#x27;s an impressive achievement.  But how many offices use substantial amounts of paper entirely internally any more?<p>The big problem with paper recycling is that the fibers get shorter on each pass, resulting in weaker paper.  Going closed-cycle on paper is going to make that problem worse.  It&#x27;s not like aluminum, where you can go round and round forever without deterioration.  Now if the system can take junk mail as a feedstock, it will be more useful.