system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do we sometimes forget what we were thinking about when walking into a different room?
gpt
Because the original thought was created in one setting (bedroom), and with a transition to a different setting (kitchen) there's a ton of new information that overrides our thoughts.         
        
This is why you remember why you got up and left once you go back to the original setting.