“If someone close to us dies, then, based on what we know about object-trace cells, our neurons still fire every time we expect our loved one to be in the room. And this neural trace persists until we can learn that our loved one is never going to be in our physical world again. We must update our virtual maps, creating a revised cartography of our new lives. Is it any wonder that it takes many weeks and months of grief and new experiences to learn our way around again?”