  We continue the works of Gurevich-Shelah and Lifsches-Shelah by showing that
it is consistent with ZFC that the first-order theory of random graphs is not
interpretable in the monadic theory of all chains. It is provable from ZFC that
the theory of random graphs is not interpretable in the monadic second order
theory of short chains (hence, in the monadic theory of the real line).
