Others don't listen effectively because they are preoccupied with their own pitch, a preoccupation that draws an impenetrable curtain around the offerings of others. Or they may simply be preoccupied with living. Some sense the hopelessness of all this noisy exchange, turn a deaf ear, and take refuge in ideology. That is, as desperate as the drowning, they reach for a lifesaver which promises all the answers. They may even know there is no such thing, for all ideologies are man-made, even if represented as having mysteriously arisen in unmistakable pristine condition.
Ideologies are inevitably subject to the imperfections that mark all men.
One of their more common weaknesses is an undue readiness to substitute belief for knowledge, whereas the only sure answers lie in knowledge. And no small number are simply gullible, having been constructed by Nature in a condition easily led around by the nose. These are often the principal targets of the ideologues. In a democracy their vote is as good as any other. This is deemed demagoguery.