Episodic memory is geared to supply human beings with unexpected events worth telling. In our species, producing unexpectedness is crucial to have a chance of attracting friends

Remembered events are unexpected (Commentary on Mahr & Csibra: Why do we remember? The communicative function of episodic memory). Jean-Louis Dessalles. Behavioral and Brain Sciences, 2018, 41, p. 22. https://www.researchgate.net/publication/322640013_Remembered_events_are_unexpected

Abstract: We remember a small proportion of our experiences as events. Are these events selected
because they are useful and can be proven true, or rather because they are unexpected? 

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Episodic memory is geared to supply human beings with unexpected events worth telling.
In our species, producing unexpectedness is crucial to have a chance of attracting friends
(Dessalles 2014). The question of reliability is subordinate to the criterion of unexpectedness.
We select a tiny proportion of our experiences and we remember them, not because they are
true, but because they are unexpected.