That's how I think too. There's a problem in wireless communications called multipath. When a signal is transmitted over the air, the receiver will often not r

That's how I think too. There's a problem in wireless communications called multipath. When a signal is transmitted over the air, the receiver will often not receive the original signal. Instead, it will receive a lot of reflected, refracted and distorted versions of it. So the question is: what's the best way we can combine those signals to recreate the original? Not going into the specifics, but it turns out that to maximize information it's often necessary to listen to trash signals (one that has a lot of noise) because those might have information that good signals do not have (as many times they will be redundant).