“Insofar as there is no evidence of a thing, then the answer to ‘Does it exist?’ is exactly the same as the answer to ‘Is a sound is made by a tree which falls where no one can hear it?’ and that answer is ‘Who cares?'” ~ Warren Falk
If a thing is consequential, then, by definition, it has consequence. If a thing has consequence, then that consequence is evidence of its existence. Therefore, to the extent that there is no evidence of a thing, then it is inconsequential. If there is such a thing for which there can be no evidence, the thing’s existence can be of no consequence, and all further time spent pondering it is in vain.