We’ve all had that feeling before. That déjà vu feeling that what’s happening around us has happened before. Strangely enough, déjà vu occurs mostly when we are younger, and tapers off as we age. One might think it should be the other way around. Science has a difficult time explaining the phenomenon, mostly because you can’t recreate the feeling on demand in lab to study it. Our good friend, Vsauce, does his best to explain the strange occurrence to us simple minded folk.