Forsyth, IainMesland, BramRennie, Adam2015-12-131076-9803http://hdl.handle.net/1885/76005This article is about erroneous attempts to weaken the standard definition of unbounded Kasparov module (or spectral triple). This issue has been addressed previously, but here we present concrete counterexamples to claims in the literature that FredholmDense domains, symmetric operators and spectral triples20142015-12-11