We have different means to convey our messages like pictures, voices, touch and many more. Each means has its own limitation though. No matter how hard we try to convey messages, their interpretation is done by the receiver, and if receiver chooses not to interpret what can one do about it? Nothing.
Not really. "Nothing" is represented consistently and any of senses can interpret equally, that too without being taught to sense it. Silence can be deafening but is experienced equally by all of us well, and even by a deaf. Dumb can convey nothing easily by not saying nothing. Black is seen by all of us and even by a blind.
Really you can represent nothing with nothing and still get it conveyed to anyone without any false interpretation. We don't need any senses and to all our senses nothing means the same. No other knowledge has this much consistency.
Following is one of Khalil Gibran's essays.
THE EYE
Said the Eye one day, "I see beyond these valleys a mountain veiled with blue mist. Is it not beautiful?"
The Ear listened, and after listening intently awhile, said, "But where is any mountain? I do not hear"
Then the Hand spoke and said, "I am trying in vain to feel it or touch it, and I can find no mountain"
And the Nose said, "There is no mountain, I cannot smell it"
Then the Eye turned the other way, and they all began to talk together about the Eye's strange delusion. And they said, "Something must be the matter with the Eye"
- - -
Zero means a lot more than it meant earlier. Black is more than just a colour to me now.
Nothing..?