Your ECS API looks very similar to that of Bevy's, were you inspired at all by that?

From the little I can see of it, it looks like you don't allow writes to data and instead prefer to return a new thing based on a query? Based entirely on the below.

``` @system def control( sensor: Query[WorldPos, WorldVel, Goal], rw: Query[RWAxis, RWForce] ) -> Query[RWForce]: ```

I assume this is due to the distributed nature of your simulation framework?

Either way, neat. Very interested in this though for more terrestrial applications.