This seems to be like the four sons of the hagaddah.
חכם - This would be the spiral. He studies and learns and builds himself up. Everything that he does is designed to make himself better. שבעה נפל צדיק וקם Whenever he makes a misteak [sic], he gets up and keeps going at a higher level.
רשע - This would be the wheel. He refuses to learn and change and he insists on continuing the way he has been.
תם - This would be the tube. He is not really paying attention and is just going on in the direction that he happens to be. He does continue as long as he is not stopped, but does not really know how to handle difficulties. He wants to progress, but does not know exactly how to develop.
שאינו יודע לשאול - This would be the shells. He does not know what to do or how to progress. He is wrapped in his life and just stays the way he is. He accepts life the way it is. That is why the hagadah shows him as a baby.
Now that we have made the connection to the hagaddah, we see from the order that they are brought in the haaggadah, what the order of eating would be. Spiral, wheel, tube, shell.
We can also make a connection to the ארבעה מנים of succot. Just as we take them all together for the main מצוה we need to take them in the proper order, put them all on the same spoon, and eat all for together.
Another connection is to the ארבעה מינים (four heretics) of succot. We see that just as we should destroy מינים, we should consume all four completely.