I’m trying to figure out how does RefFrames and Grids helps.

The problem in general is beside Sensor-Motor and Spatial tasks I can hardly find out problems that can be shoehorned into that Framework.

So I’m looking for problems that can use CC algo which are not Sensor-Motor and Spatial tasks ?

Can you get me one or two !?

To start you up with I’ll show you one :

GOAL: Solving equations in the form ax+b=0

```
GRID:
Location: Transformed expression
Ex.: (ax-b=0)--[+b]-->(ax=b)--[/a]-->(x=b/a)
Ex.: (3x-15=0)--[+15]-->(3x=15)--[/3]-->(x=5)
Ex.: (3x-15=0)--[+15]-->(3x=15)--[*3]-->(9x=45)--[/9]-->(x=5)
Ex.: (2x+x=15)--[sumby(x)]-->(3x=15)--[/3]-->(x=5)
Every expr signifies a location on the grid
Landmark/Feature: Reward i.e. was the transformation good or bad ??
Actions : {+,-, *bottom, Ax + Bx = (A+B)x }
```

So we have our Movement commands the Actions.

We have the Grid where a Location is a transformed expression.

Still there is slight problem even with this example : the Locations are too abstract to be represented by Grid modules. Second they are not known in advance you need do the Calculation/Movement first to see the Location.

Probably this is to abstract of a problem ?

So can you give me an example which is just ONE level of abstraction above Sensor-Motor task that will fit ?