inductive TemporalType where
/-- Flow: rate of change. Responds at intrinsic speed.
Examples: new orders, initial claims, industrial production growth. -/
| flow
/-- Stock: accumulated level (integral of flows).
Additional lag of O(tau_accumulation) beyond the flow.
Examples: unemployment duration, inventory level, loans outstanding. -/
| stockDerivation of Leading and Lagging Economic Indicators