That the shamanic practices will be pealed back, to reveal the familiar reality of scientific investigation.
I've had many lucid dreams, sleep paralysis, etc. "Navigating your dream state" seems really just like a lucid dream.
You're pretty much able to create a life-like world at whim in a lucid dream. The ability of the mind to hallucinate sensation in great depth is tremendous, and im sure, tied deeply to dreaming.
I believe great scientists often start in wooville before they are able to distill science out of it. “Why should not a bold thinker have guessed something that is afterwards confirmed by sober and painstaking detailed research?” -Freud
Science is a process which includes the creative step of imagining a solution/explanation.
The differentiation between science and "systematic religous doctrine" is not in the character of the people, nor particularly in the way they think. Only that the scientist has an additional goal/duty to test his explanations.