Symbolism, Imagery, Allegory
Augie's life doesn't have much of an order to it. That makes reading about his adventures grueling work at times. It also makes it funny that Augie is so impressed with Einhorn, for whom order is of the utmost importance.
"Let's keep things in order now—that's the main thing," the older man says while he and Augie go through the Commissioner's papers. Einhorn likes keeping files and stacks.
Keeping order is a way that Einhorn exercises control—or at least the appearance of it:
To Einhorn, the enjoyment of a woman not his wife was such an organizing act. And Lollie must have been important to him, for he kept track of her to the last. (7.63)
Augie doesn't pick up Einhorn's example. "Though I had been Einhorn's office clerk I hadn't learned much of neatness," he tells us (8.4). We're given to wonder whether Augie would have been more of a success if order and structure were more important to him.