Why is it so hard to recall mundane events? Because they are mundane.
It seems that we are being robbed of the vast majority of our past on a regular basis. We live it and it’s gone. Why doesn’t more of it stick in memory?
One common assumption in cognitive psychology and neuroscience is that we cannot possibly remember everything because our brains would not be able to hold memories of each and every experience and perception over a lifetime. Instead, we store in long-term memory only what is important. But how does the brain determine what is “important” enough to remain in memory?