Jefferson intended the Pavilions as a pedagogical instrument for students studying architecture, as didactic examples. To this end, the columns of each Pavilion typifies a different architectural order culled from history. The variety of examples shows how the formal structure of the Lawn – i.e., the structure of republican government – is capable of absorbing and integrating an extreme eclecticism. Meanwhile, Jefferson is careful to distribute the different orders among the Lawn so that the Pavilions with the larger columns or giant orders do not visually overpower the Pavilions with the smaller columns. The Pavilion orders (the professors), while placed in a hierarchy between that of the dormitories (the students) and the Rotunda library (knowledge), are established on an equal basis among themselves. Thus the orders are at once difference, hierarchy, and equality. This is reinforced by how they interact with the walkway columns: each Pavilion interfaces with the colonnade in a different way, punctuating it at intervals, even as they are necessary to complete the continuity of the Lawn’s U-form. Sometimes the orders pass in front of the colonnade; sometimes they recede behind it; sometimes the two become one and the same; and sometimes both are even interrupted. Nevertheless, the integrity of the scheme as a whole is preserved.