Maybe the "raw" record of our experiences is stored on a separate layer. I mean, I can close my eyes and flip through a series of images from my last 12 or so waking hours. They seem more like snapshots than a description of what I saw/where I was. Some people may have actual photographic memory [1].
Who knows, at some point in the future people may able to opt-in for implants that record everything around them, at a greater accuracy than brains, but use the brain for storage.