I've just started reading "The Organised Mind" by Daniel Levitin and it seems that there will be answers in that book. "...memory retrieval requires our brains

I've just started reading "The Organised Mind" by Daniel Levitin and it seems that there will be answers in that book. "...memory retrieval requires our brains to sift through multiple competing instances to pick out just the ones we are trying to recollect. (...) This is why it's difficult to remember where we left our glasses or car keys - we've set them down in so many different places over so many years that all those memories run together and our brains have a difficult time finding the relevant one."