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That amazing vacation? You barely remember most of it — and that's by design.
💡 Your brain judges experiences mostly by their peak moment and how they ended — not by the total duration or average quality.
Think about your last vacation. Chances are you remember the highlight and the final day — but the Tuesday afternoon in between? Gone. That's the peak-end rule, discovered by psychologist Daniel Kahneman. Your brain doesn't average out an experience minute by minute. Instead, it judges the whole thing based on just two moments: the most intense point (the peak) and how it ended.
This quirk explains some bizarre findings. In one famous study, patients undergoing an uncomfortable medical procedure rated it as less unpleasant when doctors added extra time at the end — but made that extra time slightly less painful. More total discomfort, yet a better memory. The ending rewrote the story.
Restaurants know this trick. A mediocre meal followed by an incredible dessert leaves you raving about the place. A great meal with a botched check leaves you annoyed. The peak and the ending act like a highlight reel your brain mistakes for the full movie.