In a day wrecked by health issues—I was supposed to be spending the day with visiting researchers from Northrop Grumman–I did manage to write a few equations and words into the method section of the document describing our plans for a compressed-sensing upgrade of The Cannon. It is so simple! And I realize we have to correct our argument (in the first paper) that we need exponentially large training sets to go to large numbers of labels. That argument was just plain wrong; it was based on an assumption that The Cannon is effectively a density estimator. It is not; it is essentially an interpolator.