The Amoeba Project

"transitivity - the tendency of one's friends' friends to be one's friends as well. In SWT I asserted that transitivity could be expected of strong ties, but not especially of weak ones, since the rationale for transitivity-if A chooses B and B chooses C, it is inconsistent for A not to choose C-is irrelevant for weak ties: A may not even know C, and if he does he will not find it inconsistent not to be interacting with his acquaintance's acquaintance" (Granovetter, see below, p. 218)