Indigo OK - here's what I think. You are almost certainly right - compared to where we'll be in 300 years, our science is probably (comparatively) primitive. But this does not mean that your "woo" ideas are somehow more credible because we don't know what we'll know in the future.
It's quite simple - anything you, personally, can detect is detectable by science. Just is. Science can take us back to within a nanosecond of the BB, it has rid the world of things like small pox, put men on the moon & given us the internet (to name but a few, few things). Are you seriously suggesting it can't spot ghosts, auras and psychic healing (or whatever it is you're actually talking about)?
I have a real problem with people saying things like "I know for a fact that the dead walk next to us" - because you don't.
Your ideas will be credible the very second you present some evidence.
Oh, and by the way - if any evidence is found for your beliefs, guess who will find them? Yup....scientists. And I bet you won't be so quick to dismiss science then, will you 