That's too materialistic for me...
Maybe learning is a property of matter. If iron bars and aluminum cones can learn (as the old study referenced in the article says) and electrons have memory (as Ray said) then the world looks even more alive to me. I know you don't like to ascribe consciousness to non-living matter, but what do you think would be a test for consciousness? It is not easy to come up with an objective one and of the few that I know of, most have yielded stranger result than this study - i.e. certain states of matter like plasma and gasses at certain temperatures or pressure pass those tests of consciousness but only under certain conditions. Similar to consciousness in humans requiring certain conditions to manifest itself.