Maybe it is for you.
I just read this on page 350:
Here's what I mean by witness: the simple act of observing what is happening, and speaking to it with the authority of that observation without the need to appeal to further authority. In short: You have the authority of your own experience; to observe what you have observed, and to say that you have oberserved it, and to know that you know it. Witness is simple. It's not an argument, It's not a rationale. It's not a justification. It an observation. It speaks the truth without asking permission, and it rests on your ability to simply perceive what is perceptible to you, from the unique perspective you find yourself in.