Click here to check this post out on my personal website.
Spoiler warning: I’m restricting this post to the functionality of the Sansa, so there really won’t be much discussion about plot points. The warning is here nonetheless.
Seikaisuru Kado has been one of my favorite shows in this season and a lot of it has to do with the sci-fi theme. My favorite feature of the sci-fi genre is the ability to explore the possibilities hidden in the natural world. Kado does this by introducing crazy extra-dimensional objects to solve some of humanity’s problems. I wanted to write about all of them, but I don’t know enough physics to comment on the Wam. The recently introduced Sansa, on the other hand, is a bit of an easier target.
As it’s introduced in the series, the Sansa is an anisotropic tool designed to give humans the ability to sense the anisotropic, which can be thought of as being similar to higher spatial dimensions. As a side effect, humans are able to make full use of their brains, which apparently extends into multiple dimensions.
When I first saw the Sansa, my reaction was that it was a reference to the old myth that humans only use 10% of their brains. If your physical brain is only a part of your true brain, then this idea totally makes sense. Plus, you can add in plenty of other unexplained mental phenomena. For example, you could say that the feeling of déjà vu is caused by rogue memories entering your brain from other dimensions. I think this is where the idea of the Sansa originated.
Now where did the idea of eliminating the need for sleep originate? I suspect it has something to do with the concept of unihemispheric slow-wave sleep. This is something we’ve observed in some species of birds and marine mammals. It’s believed that certain species of birds can enter a state of sleep and continue to react to their environment while flying. There’s still a lot of research to be done in this field, especially about the quality of this type of sleep, but it makes for a good sci-fi story.
I wanted to keep this post restricted to the inspirations for the Sansa because I don’t know how much I can speak to the validity of it (I’m not a sleep expert). I wanted to finish off with a particular question I had about the Sansa, though. The series doesn’t really make it clear if it’s just the human brain that is multi-dimensional. Are the other “selves” contained within your full brain attached to other physical bodies? It’s common for consciousness to be treated as being separate from your physical brain (it’s an idea that I don’t really like if I’m being honest). I wonder if the series is trying to suggest that human consciousness transcends the known universe into other dimensions. Otherwise, it would make more sense for there to be other bodies in these higher dimensions.
Anyway, I hope you found this all interesting. Let me know what you think!