[icebraining]

If I may try to answer for Animats, I think the point is that you're still using the map in an imperative way. You set a variable to some list, then you apply a map to that list and assign that to another variable. If you then change the first variable, the latter doesn't change - that means the order of execution matters for the application of the map.

That said, that's mostly a specificity of Javascript than a property of the map operation. There's no reason you can't have a map on an FRP that truly declares a relationship between entities.