(Logique) Problème insoluble.
ETYM Latin, doubt, Greek, from aporia without passage, at a loss; a priv. + poria passage.
A figure in which the speaker professes to be at a loss what course to pursue, where to begin to end, what to say, etc.
Professed but false doubt of what to say or choose.
Rhetorical device of pretending not to know what to do or say; passage expressing a doubt or difficulty.