Walras' law is a central tenet of economic theory. For mainstream economics, it is a 'plausibility check' for model-building; for heterodox economists, the refutation of Walras' law is key to understanding Keynes' revolutionary contribution to a new economic paradigm. The purpose of this short research note is to elaborate on the possibility of a refutation of Walras' law and to inquire into its preconditions. It will be argued that this can be achieved on the basis of an alternative pre-analytic vision (...) of a genuine monetary economy as foreshadowed by John Maynard Keynes. (shrink)