In article <1Jc9b.20191$cJ5.2700@www.newsranger.com>,
Sir Arthur  <nospam@newsranger.com> wrote:

But what if the phenomenon were subtle in the sense that it may
manifest in the physical world, but derive from a source which by
its very nature could not provide the kind of hard evidence that
would satisfy skeptics for whom reality is limited to the material?

We have those already. They are called "religions". 

Rick R.