Jay@AgsReward.com said:
Control and effect. They mean different things, jack.
Every time this comes up, an upstanding, highly educated, pillar of the community (also called a loan originator) will handwave the plebeians and say something just as you did. It always starts with "The fed has zero control over the mortgage rates" and always ends with "And thus the rates move when the fed rate moves." For the homebuyer across the table, the middle part doesn't mean much.
Lets review control theory: Send, Receive, Interpret, Feedback. Or in an extremely simple control system: Cause and Effect. (not control and effect, a control system encapsulates a cause and effect).
If I have one button that I can press and something happens to a widget somewhere, I have a causal link to that widget. If I have one button that I push and nothing happens to the widget. I do not have a link. I cannot create an effect and I do not have a control system. If I have two buttons, that I can choose to press either one, and they each cause something different to happen to the widget, I now have a control system. Might not be fully controlled, but I have a control system. I can now try to use this control system to achieve a higher objective. (You're always trying to use a control system to achieve some goal right? You want the stuffed animal-better get that crane right over it.)
The fed absolutely has two buttons it can push. And it uses these buttons to achieve its goal of guiding the economy as it sees fit. It raises rates to prevent the overheating of the economy. It lowers rates to encourage economic growth. By pressing the buttons, this controls huge facets of the economy which include mortgage rates. You think if the prime rate skyrocketed from 0% to 2.00% tomorrow that mortgage rates wouldn't jump to 5-6%? Thats control. There was a cause, the cause created an effect, the system was controlled.