Being forgetful is not only normal, it makes you smarter. The main function of memory is to improve decision making, and forgetting irrelevant details helps you to be more intelligent and make informed decisions.
You know those people who always boast about having a perfect memory? Maybe they shouldn't, because having total recall is totally overrated. That's according to a new paper in the journal Neuron, which concludes that forgetting things is not just normal, it actually makes us smarter.