 It is commonly assumed that at least three theses underlie this argument. The first one is “the one over many” which states that many things having L in common must be explained by the existence of the form L that all of them participate in. The second premise is implicit and it has been called the premise of “non-self explanation”; it simply assumes, that in explaining what a, b, c and L have in common one cannot appeal to the L itself, but needs to appeal to a different form of largeness, L1. The third premise which is implied in this argument is “the self-partaking” premise; it assumes that the form L is itself L, i.e., that the form of largeness is itself large.