It’s a cool idea, but the tutorial is incredibly lame.
To offer one concrete example from quite early on, they suddenly start using the word “epoch” without telling you what it means, or offering any explanation/definition. Of course I know what the word means in a broad historical sense, it’s roughly synonymous with “era”. But here it is used in a very narrowly specific sense without ever being defined, and that’s not something that should happen in a tutorial.
Now I’m looking at it and it says “Epoch: 10.854” OK, but 10.854 what? days? hours? wentworths?
Another glaring problem with the tutorial is that there’s no way to back up a step and re-read the previous box if you missed something. It should ALWAYS be possible to go backwards in a tutorial.