I think it’s our minds way of keeping us on our toes.
I love it when I get deja vu – cos for a brief while I feel like I am in the twilight zone.
It happens to me occassionally.
for me though it’s usually the opposite.: but that could be old age settling in…......it’s called Jamais vu
*Jamais vu (from French, meaning “never seen”) is a term in psychology which is used to describe any familiar situation which is not recognized by the observer.
Often described as the opposite of déjà vu, jamais vu involves a sense of eeriness and the observer’s impression of seeing the situation for the first time, despite rationally knowing that he or she has been in the situation before.*