In truth, in the fairy-tale version of bailing out Lehman, the next domino, A.I.G., would have fallen even harder. If the politics of bailing out Lehman were bad, the politics of bailing out A.I.G. would have been worse. And the systemic risk that a failure of A.I.G. posed was orders of magnitude greater than Lehman's collapse.
Andrew Ross Sorkin
Truth, Politics, Risk 