Or hey, the courage to even act upon the most basic of conclusion. Being useful is very different from being aware or intelligent. It's sometimes more useful to be ignorant and brave, than scholarly and asleep high in an ivory tower.
Knowledge, or its synthesis into derivative knowledge, have nothing to do with utility I think ? It's sometimes pointless to acquire knowledge, and useful to act upon the world. So I don't really understand what you meant by "useful" yourself there.
What is the goal to reach ?