A meatball is round, solid fill; a cup is round and empty. You can put the meatball in the cup, but neither the meatball nor the cup has changed. Take the meatball out of the cup and, bingo! ....they're still the same.
To "posit" is to say a way the world is. We can posit 1 and we can posit 0--they are both ways the world is, both positive, valid forms. Zero is like the cup: we can fill it with meatballs, but we can also subtract meatballs and have a positive zero again. The emptiness of the cup is not eliminated from existence, it's still there even when hidden behind meatballs. It's always there, behind everything.
Something cheats to make it so. Thought cheats. We can only talk about what we know, and that has screwered our language towards the 1, towards something that exists and nothing that is denied. To posit is to draw a thought full of form and emptiness and impose that as the world, and in doing so make the world positive full and empty forms.
