Likewise, if market participants expect future short-term rates to be low, then long-term yields will also tend to be low, all else being equal. Monetary policy makers can affect private-sector expectations through their actions and statements, but the need to think about such things significantly complicates the policymakers’ task (Bernanke, 2004).
In short, if the economy is like a car, then it is a car whose speed at a particular moment depends not on the pressure on the accelerator at that moment but rather on the expected average pressure on the accelerator over the rest of the trip - not a vehicle for inexperienced drivers, I should think.