“The true life is not reducible to words spoken or written, not by anyone, ever.” This appears to be a left-handed way of saying, “It’s all fiction.”
Don DeLillo continues with a more specific and even more demanding observation: “An eight-hundred-page biography is nothing more than dead conjecture…”
When I studied rhetoric at the university we had several exercises designed to develop various skills in writing. One I remember well was to write detailed instructions so that anyone could read them and flawlessly perform the task described. My essay was called “Scratching the Grasshopper” and it dealt with the very Southern California effort of paddling a surfboard out beyond the shore break.