Thank-you friends, Soren, and aglorincz for posting your thoughts, questions and findings to this forum. We need lots of input from others, or otherwise it just looks like, with most of the posts coming from one marginalized mystic/mendicant, that he is just raving, and making it up as he goes.
First, I do not at all believe that the religious experience (the 8 stages of samadhi) are either rare, nor difficult. What makes the 8 stages of samadhi seem rare, is most religious professionals (priests/rabbis/lamas, etc) are in the business of religion, and the business of religion is improved if they make it seem hard, difficult and rare. If the religious experience (the 8 stages of samadhi) were easy, then everyone would go out and do what was necessary to have them on a regular basis, then the religious professionals would be out of business, because none of them seem to have religious experience (the 8 stages of samadhi). Speaking of which, the link to Soren's evidence starts with a quote from the Dalai Lama, but I have found nothing in his writing to suggest that he has had any religious experience (the 8 stages of samadhi).
Now, it may seem being a marginalized mystic/mendicant, who claims to have found that all religions depend upon deeply flawed translations of their own religious literature, is thus just making it up as he goes. Well, if that were true, then why have most mystics been marginalized by the religious professionals (priests/rabbis/lamas, etc.) of the religion/culture that they came from? Well, the reality is mystics are bad for the business of religion, so the religious professionals (priests/rabbis/lamas, etc.) feel they have to demonize them, or otherwise there will be too much lost donation stream, and that is bad for business.
The truth is, my religious experiences are very similar to those of the major mystics; when the documents describing those experiences are properly translated. This is why I quote from the major mystics on a regular basis.
Now, back to the links of Lorin Roche, Ph.D. I read through them and found that he has not figured out anything, and he seems to be the one making it up as he goes. Just read the mystics, meditate a lot, and hone your lifestyle to improve your meditation experiences. That is it.