Uselessness is one of those attributes. Many things are totally useless until they aren't and predicting what will and what won't be useful means you are able

Uselessness is one of those attributes. Many things are totally useless until they aren't and predicting what will and what won't be useful means you are able to predict the future. Sure, one could imagine totally useless facts, but I could just as quickly imagine social situations in which they could be put to use. TL;DR: finding things that will be 100% reliably useless in the future is impossible