[sghi]

Not a huge amount of experience with models this big, but a common problem I see in Ecology is a bit of a misunderstanding of how models can be used - they're only really useful as a representation of what is going on and a way of trying to look at a few variables.

A lot of the time models are seen as a kind-of black box, where you stick data in and get the right data out - doesn't quite work that way!