You’re in a cube and you can only ever see inside your own cube, but you could have a one-way window that you could look out and see that there are other cubes other than yours, but you can’t see inside them, and your cube is the only cube that you can ever see inside. You can assume what it’s like on the inside of the other cubes, but you never truly know.
We’re all just talking to each other from our individual cubes.
Do you ever wonder what it’s like outside of your cube, outside of all the cubes? Does anything even exist without the cubes?