Robert Kuhn and Sam Parnia have a short talk about consciousness and the death of the body. The following is my response to the talk.
https://www.youtube.com/watch?v=Hz_4FGdWVF8
As some of you know I'm not religious, but I do think there is evidence or good reasons to suppose that consciousness survives death (I go further than Sam Parnia). Also, some of you know that my two areas of interest are epistemology and near death experiences (NDEs), which I've been studying for many years. My views on epistemology inform my views on NDEs; and one of the most common mistakes made when I hear people (educated or not) talk about NDEs is the place or priority they give to scientific evidence (sometimes justified, sometimes not) as opposed to other kinds of evidence. The mistaken idea is that if science hasn't answered the question, then we don't have knowledge of the question at hand. This is the mistake that Kuhn makes all the time, and Parnia is making when he talks about the evidence for consciousness surviving death.
It only takes a cursory look at the way we use the word
know to understand that knowledge is arrived at in at least several ways besides experimentation. I surely don't need science to inform me that there is an apple tree in my back yard, or that the orange juice I'm currently drinking is sweet. I also don't need some experiment to inform me that I know algebra, or that German and French are languages. Correct reasoning (logic) also informs what I claim to know, i.e. inductive and deductive reasoning. Finally, one of the most pervasive ways of gaining knowledge is through testimonial evidence, i.e., much of what we know is handed down to us from scientists, historians, mathematicians, and physicists, to name a few, so, there are at several ways of attaining knowledge apart from science. If this is true, and I believe it is, then appealing to science all the time for our fund of knowledge is a fallacy. I'm not saying that science doesn't have an important place in what we claim to know, I'm simply saying that science is not the end-all and be-all of what we claim to know.
Much of what Sam Parnia claims about consciousness relies on the testimonial evidence of NDEers. If this is true, then I believe that he's either ignoring some of the testimonial evidence, or he doesn't think it's strong enough for some reason he hasn't enumerated. For example, there is plenty of testimonial evidence that supports the idea that consciousness survives for much longer than he concludes. Many people who have NDEs report seeing their deceased relatives, which by definition means that they have survived, in many cases, for many decades after their bodies have decomposed. Moreover, there is other firsthand testimonial evidence that suggests we've been around for many lifetimes.
The following was taken from page 14 of this thread. I want to reiterate what makes a strong inductive argument based on testimonial evidence. Or, one could ask, what makes strong testimonial evidence?
As many of you know, the criteria for a good inductive (in this case an inductive argument based on testimonial evidence) argument is much different than the criteria of a good deductive argument. The criteria of a good inductive argument are as follows:
(1) number
(2) variety
(3) scope of the conclusion
(4) truth of the premises
(5) cogency
First, number. It seems rather obvious that if you have a greater number of testimonials that say X happened, then the stronger the argument. This does not mean that the conclusion relies solely on numbers, because numbers in themselves are not sufficient.
Second, variety. The greater the variety of cases cited the stronger the conclusion. When examining the conclusion of an inductive argument the conclusion is either strong or weak, which is much different from a good deductive argument, where the conclusion follows with absolute necessity. The difference being what is probably or likely the case (inductive arguments), verses what necessarily follows (deductive arguments).
Third, scope of the conclusion. This has already been covered briefly in the opening paragraph. It means that the less the conclusion claims the stronger the argument. In other words, conclusions that are broad in scope are more difficult to defend. A conclusion that is limited in scope is easier to defend.
Fourth, truth of the premises. Clearly this means that the premises must be true, which by the way, is the same criteria that makes a good deductive argument, i.e., a good deductive argument must be sound (soundness means the argument is valid and the premises are true).
(a) Also, since we are dealing with testimonial evidence, in order to know if the testimonial evidence is true we need corroboration, i.e., we need an objective way to verify some of the testimonial evidence. This helps to establish the truth of the testimonial evidence, and since the evidence is testimonial evidence, it helps to establish the fourth criteria of a good inductive argument, viz., the truth of the premises.
(b) Another important factor in determining the truth of testimonial evidence is firsthand testimony, as opposed to hearsay or second-hand testimony. Firsthand testimony is stronger than hearsay or second-hand testimony, all things being equal.
(c) Consistency of the reports is another important criterion in terms of getting to the truth. However, testimonial evidence does not have to be perfectly consistent to be credible. When dealing with a large number of reports you will inevitably find some inconsistency. So, inconsistency itself is not enough to rule out the reports unless the inconsistency is widespread, and of such a number that it affects the quality and number of consistent reports. So, although consistency is important, it must be looked at in terms of the overall picture.
Fifth is cogency. You rarely hear this criteria, but it's very important in terms of effectiveness. Any argument's (deductive or inductive) effectiveness is going to be based on whether the person to whom the argument is given, knows the premises are true. For example, if I give the following argument:
The base of a souffle is a roux.
This salmon dish is a souffle.
Hence, the base of this salmon dish is a roux.
If you do not know what a souffle or a roux is, then you do not know if the premises are true, so how would you know if the conclusion is true. You may know that the argument is valid based on its form, but you would not know if the premises are true. Thus, you would not know if it is sound. For any argument to be effective, you have to know if the premises are true; and since knowledge varies from person to person, an arguments effectiveness is going to vary from person to person.
Finally, the main point of this post is to point out that we can know many things apart from what science tells us, and I think this is where Kuhn and Parnia go astray.