In 2021, Beatriz Flamini entered a silent cave and remained isolated for 500 days. Without sunlight or normal cues to track time, she completely lost her sense

In 2021, Beatriz Flamini entered a silent cave and remained isolated for 500 days. Without sunlight or normal cues to track time, she completely lost her sense of its passage, emerging convinced that only about 160 days had gone by—more than a year less than the reality. [▻](https://video.twimg.co…