As opposed to so many takes on "flow based" programming, which present some imperfect nodal representation of the program, but rarely can the user make sense of what's going on by seeing stuff moving around as the thing executes.
And by the way, be sure you're ready to sink some time in if you're curious about this game...it's just too good, and I've had to consciously reduce the time I'm spending, because I could just keep optimizing...building...expanding...optimizing...it's built in the shape of the reward center of my brain.
I feel the same. It scratches so many itches. I made the mistake of installing Space Exploration mod after the first run… so many hours invested now.