The spoken WORD, by the voice is not the written WORD, by the pen as the written WORD cannot be the spoken WORD, until it is brought to life, by speaking from it, some kind of witchcraft, maybe.
In a written contract, that is by a document, or documents but in a spoken contract, that is by voice, which is the document.
One should null the other out, i.e, the spoken WORD should null the written contract, cos 1 is dead and the other is live (living).
The written WORD - DEAD
The spoken WORD - LIVING
