Why your brain needs to feel lost | Giuliana Mazzoni | TEDxSapienzaU

Mazzoni begins by exploring the sensation of being lost—whether contemplating the ocean or walking through thick fog—describing the disorientation, confusion, and sense of life suspension that accompany these moments. She frames these as liminal times when life requires shedding old identities and growing new ones, characterized by pain and uncertainty but also freedom to reflect and reimagine oneself.

As a memory researcher, Mazzoni explains how human memory works thematically and hierarchically, with most people remembering life only partially and scantily. Crucially, she argues that memory shapes identity and includes a psychological function of enhancing our sense of growth by comparing our current self favorably to our past self. She introduces the concept of the reminiscence bump—the phenomenon where transformative experiences during childhood, adolescence, and early adulthood are most memorable—and notes that subsequent transformative events throughout life create additional reminiscence bumps proportional to their importance.

Mazzoni contends that personal identity is fundamentally constructed through transitions and moments of change that occur repeatedly throughout life. She identifies physiological transitions (childhood, adolescence, early adulthood) as drastic and irreversible, and notes that societies traditionally organized rites of passage to help individuals navigate these changes while maintaining mental well-being and social connection. She observes that modern societies with multiple models and fewer clear rituals extend periods of existential uncertainty, making these transitions harder and longer.

The speaker emphasizes that the brain is a predictive machine that uses past memories to understand the present and predict the future, with neuroimaging evidence showing overlapping brain areas for remembering and imagining. She illustrates the importance of memory and identity continuity through the case of Jimmy G, who suffered from severe retrograde amnesia and could not maintain a stable sense of self.

Mazzoni concludes by arguing that sitting with the discomfort of liminal moments—remaining open to one's feelings and taking time for reflection—allows these painful experiences to become transformative. She describes how, during these in-between times, people can reflect on their past, distill experiences, and imagine multiple possible selves. She presents three wishes: that people learn to enjoy times of feeling lost while shaping their authentic selves, that she personally navigates her own retirement transition with this mindset, and that everyone recognize moments of feeling lost as the very places where they become who they are.