First, that testimonial evidence is a valid way of justifying one's conclusions, and moreover, one's beliefs. Most of what we know comes from the testimony of others. Thus, it's a way of attaining knowledge. — Sam26
Let's talk then about how testimonial evidence is typically accepted as proof of a fact. Testimony is the primary method used in courtrooms for fact finders to consider when determining fairly important matters, like whether a person should have his liberty or life taken from him or whether he should be indebted to another for millions of dollars.
There are all sorts of rules, referred to as
rules of evidence that, for our purposes, could be called
pragmatic epistimology, meaning the applied ways we consider evidence generally, but testimony specifically, trustworthy. Without getting into all the rules, I'll just focus on a few: (1) hearsay, (2) cross examination, and (3) the weighing of credibility. I'm sure another lawyer out there might think it better to focus on other rules, but these are enough to make my point.
To begin: Hearsay is an out of court statement conveyed by another in order to prove its truth. Think of it as "
I heard Bob say [i.e. hear say] that Mike shot Joe." We don't trust that because we need to hear from Bob as to what Bob said, not me. You can't question me on what I witnessed because all I can tell you is what I heard.
So, when you tell me that you read a book that offered testimony from a witness as to their NDE, or even further removed, testimony of testimony from another as to what someone said, I have second and third hand evidence, none of which I can question.
And that brings me to the second issue: Cross examination. I have to be able to seriously question the witness to know what happened. Reading a witness statement without asking all sorts of details, particularly ones like how much familiarity someone might have with operating rooms, who they may have spoken with between the event and the testimony, the very particular thing they said without embellishment at the time of the event, who was present to corroborate the testimony, whether those corroborating witnesses have offered consistent information, and on and on and on.
And then there is the weighing of credibility. All the things I've said have to be considered, and it's perfectly appropriate for someone just not to buy it. To listen to the witnesses and feel like it just doesn't add up, that the speakers seem flaky, motivated, confused, or whatever it might be is a very acceptable to reason just not to beleive what they're saying.
The point here is that you're asking me to believe NDE testimony has been offered in a way that leads to no other conclusion than to admit that our physical laws as we know them have been violated. That's just way too much to ask. I would need a videotaped OR, watching a pronouncement of death, seeing a patient revived and then hearing that patient then tell of his observations he made without using his eyes from a bird's eye view hovering in the operating room.
Since I don't have that, it's very reasonable for me to reject the testimony. In fact, it's fairly unreasonable to read a bunch of books on NDEs and then believe it's possible to see without eyes. Other experiments show that just cannot be done. That there are volumes and volumes of evidence amounts to nothing if that evidence isn't subjected to meaningful scrutiny.