Roughly two-thirds of adults report having experienced déjà vu — the sudden, vivid sensation that the moment unfolding in front of them has already happened. The duration is short, usually a few seconds. The conviction is total. Neuroscience offers several candidate explanations. A momentary asynchrony between the two hemispheres of the brain. A misfire in the temporal lobe. A retrieval cue triggering a partial match in long-term memory. None of them have been definitively confirmed. The phenomenon is well-documented and poorly understood. The folk reading is more direct. Something in the system flickered. The current moment was retrieved from cache instead of being computed fresh. A render hiccup. This is not a serious scientific claim. It is, however, a description that fits the felt experience more closely than the official theories do. That is worth noticing. When the layperson's intuition outperforms the academic explanation in capturing the texture of an event, sometimes the layperson is wrong. Sometimes the academic explanation is incomplete.