Awesome series!

If you are familiar with physics, astronomy, mathematics, theories, you will recognise a lot of stuff used in this show. I'm not sure about the novel, so I'm only referring to the show.

* Some were asked before.
* Some are still being debated.
* Some still being proven.
* Some already possible mathematically.
* Some observed in real life.

The philosophical questions are also relevant, and many have been asked before, and many were recently asked.

I can't believe they were able to combine these different school of thoughts into one cohesive story. I haven't seen a story like this before. Usually, sci-fi authors would only focus, at most, 5 to keep it simpler for the audience, but in this show, it's out-of-this-world.

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The animation part was also great. They combined two types of art, and that was amazing. Also, some would probably critic how the movement of the animated characters are not fluid, but that's the whole point, it was intentional. It captured the 'game feel'.

Overall, from episodes 1 to 16, each episode felt like watching a 45-minute movie. They spent a lot. It wasn't half-baked. They were consistent in quality every episode.

Highly recommended!