Stress enemy of memory: how a memory is created

Why do we remember the first kiss, perhaps fleeting and exchanged with someone we didn’t even like so much, and not the tenth? For what reason if someone asked us what is on the 10 cent coin, we widen our eyes, unable to give, even to risk, an answer? A book answers these questions, and several others in fact, by clarifying the functioning of memory and the formation of memories.