I read from various sources that Non-baryonic matter (primarily WIMPs) is the best candidate to explain a number of cosmological phenomena. Why would the phenomenon of radioactive decay not be attributed to these abundant (over 1/4 of the mass-energy of the universe) particles? I'm not trying to undermine the Uncertainty Principle, which I'm confident would remain intact given that no properties of a given WIMP are known prior to its hypothetical interaction with a radioisotope. Is a WIMP's causal influence not discussed in accordance with Ockham's razor? Have I answered my own question or is there a way to rule out WIMPs as a component involved in the decay process? Thanks.