That nearly sounds like it uses the Efficient Markets Hypothesis. This generalizes - if we view markets ( and this are one, I think - of a sort ) as control-fe

That nearly sounds like it uses the Efficient Markets Hypothesis. This generalizes - if we view markets ( and this are one, I think - of a sort ) as control-feedback systems, everything is easy until you get large lags and higher uncertainty due to lag. If the lag itself is highly uncertain, abandon hope all ye who enter here. The hard part is always separating the stories we tell ourselves about things from the nature of the things themselves.