If one can concieve it, one can bring it from the thought into the physical.
Rubbish. The ability to imagine something in no way makes it possible to create it. You don't believe me, talk to any civil engineer about the plans they get handed by architects!
Of course the question is, how do they do this?
Preceding this is the question: "Do they do this?" To which the answer is: "Almost certainly not", since there's a shortage of accounts by non-believers. Science can be defined very well as "that which happens whether you believe in it or not" - a rock falling on your head doesn't ask whether you believe in it. Observation OTOH is skewed by belief, and even observation unskewed by belief is subject to error given a suitably-sophisticated trick.
Physicists have said for decades that time & space fluctuate & therefore must be somehow alterable by some means.
Yep. However physicists have also said for decades that teleportation ain't happening. NewScientist recently did a summary. The most optimistic opinion was that the maths said it *might* be possible - but only if more energy was available than was stored in the entire universe. Oops.
If we only use 8-10% of our brain, perhaps the rest of the brain was once used for the science of metaphysics?