Existence Theorem

What would be of the world without me?
Define the world as everything that is,
All colors, sounds, tastes and shapes...
Sound is the dance of the ear and the song.
Color is the wedding of painting and eye.
Without the fruit, the tongue could not taste.
Absent the tongue, the fruit would not taste.
It there is no A without B, nor B without A,
There's no such thing as A or B, only AB.
Hence, without me, the world would not be.