Why is communication important? Because without it, we can’t do business. There would be more squabbling over resources and there would be no modern civilization. Or would there be? Squabbling implies communication. If there was no communication of any kind, there couldn’t be squabbling. The world as we know it simply couldn’t exist. This is what we are told, anyway.
Think about just how lonely would we would be if we couldn’t communicate our thoughts to at least one other person. Each of us would be locked in total isolation, unable to do more than exist. That alone would make us psychotic.
I don’t think we would be able to mate without some way of communicating our desires. We would each have to forage on our own for food. There would be accidental deaths, people might choose the wrong plants to eat and would die as a result. No one would be able to say, “Dude, don’t eat that!”
Someone might learn how to make fire, but without being able to communicate the method of doing so, we would still be cold and miserable, eating raw food. Fire would also be a protection from predators. Without that, we would be lunch. Because we would not be able to learn from another person, many dangers would have to be learned by each individual by either direct observation or by having it happen to that individual. The latter has the chance of being fatal, lesson learned to late.
We also wouldn’t be able to warn someone not to hunt that skunk, or that there was a lion in the bushes. There goes Fred, into the belly of a lion. Wait a minute, we wouldn’t have names; as a species we chose names to identify ourselves to others. That’s a form of communication.
Since we couldn’t signal our desire for sex, without communicating it on some level, our species would die out, since we can’t just divide our cells. We are too complex for that.
Of course, we do have communication; the above are just extreme examples of what we wouldn’t have. I doubt we would have evolved at all without some form of communication. Even bacteria communicate somewhat. It’s limited, of course, but they do communicate using chemicals.
Everything communicates. What about plants, you say. Well, plants communicate too, in subtle ways. A flower is just a plant’s effort to tell bees that they have nectar, so that the bees will come and take pollen from plant to plant. We would find that method of sexual intercourse a bit unsatisfactory but the plants find it works rather well.
Animals communicate as well, as anyone who has a pet can tell you. If a cat is looking at you with her back arched and tail fluffed, she is letting you know that she is scared and will lash out at anything that comes near her. Dog use growls to warn you to stay away. Cats will growl as well, and that’s usually a sign of displeasure. Birds chirp and warble, snakes hiss and in some cases, rattle.
Communication; it’s what drives life.