I don't get it.<p>Of course the economy is non-deterministic. That doesn't mean that useful forecasts can't be made. Statistical models are used because of this.<p>I agree of course that deriving and presenting a single forecast from a statistical model is a dangerous process. Perhaps this was the link the author was portraying by their quest for an Isobar map rather than just "Rain/Non rain".<p>(Also, I see others are looking at "economic forecasting" as price forecasting. I read this more as macro-economic forecasting, in which the outcomes are much to manipulate)