Germany and Greece have both wisely blinked on how best to renegotiate Greece’s outsized debt to its reluctant playmates inside the European currency union. The present fix will last for only four months, which means that the unresolved issues will surge to the fore yet again if some long-term solution is not crafted in the interim. In dealing with bailouts of this sort, financial gurus unduly rely on macroeconomic principles. In my view, that approach overlooks the gritty transactional challenges that routinely arise when parties attempt to work out delinquent loans in the shadow of bankruptcy. The picture is not pretty.