Do people ever listen with their brains?

I have been always wondering do people ever listen with their brains??

I have encountered so many colleagues & friends who don't. Left ear in & right ear out. Somehow the words didn't get stuck in their brain. The words just pass through the ears as if there is no brain to contain them.

In the end, whatever the instruction / advice won't get done. They will just disappear into the thin air. Or have become part of the earwax which we try to dig out every now & then.

So much on good advice..... I think I should just keep my mouth shut & save my breath. Maybe I should just continue to watch my discovery channel instead. At least it entertains me.