[trustmath]

It's hard to say which layer you are working with without having to know the whole model. You can always look at data as initial to what is computed, but 1. That's not much different than looking at the code and 2. Everything that is initial probably can be defined in terms of what computed it, unless you want to draw some arbitrary wiggly line between perception and act of taking a record or something like that, in which there are tons of use cases where one defines the other, no matter what sort of nomenclature you start with.