Looking in front of you, what do you see?

But some much else appears in your field of view

Most of day to day work of since
Is separating signals from noise
Until you subtract out everything else
That can produce the same effect

You simply can not denied
Until you get rid of the noise

Your brain must reject these distracting intruders
It's the same way you must reject
All the other radio stations
When you tune into this one

Even if you could get them all
At once you would hear nothing but noise
Rejecting the information you do not want to focus
On what you do want