Art by James in the Shell
The world is full of people who are blinded by the 5 senses and the messages they supply to the brain. They believe that is All There Is. And anybody who says Something Else might exist and that they may have even experienced Something Else, well, they are proponents of "woo" and therefore not worthy of paying any attention to, whatsoever! They may even be deluded or mentally ill!
The cult of "5-sense reality is All There Is" is the one that has most of the world in its grip. They believe we are purely physical bodies trapped in a 3 dimensional box and there is nothing we can do about it! This is a true prison, indeed! But many of our most advanced citizens, our deepest realizers, tell us otherwise. They say that the world we can see, hear, smell and touch is but a fraction of the true dimensions of reality that are available to us.
How do we access these other realms, these other viewpoints? Simply by withdrawing our attention from the 5 senses. When we do this we naturally experience other, "inner" worlds. Yes, materialists will say these worlds are simply the largely meaningless firing of the neurons of the brain when it is shut off from 5 sense data. But many who have had these experiences say otherwise. They say these are real worlds, organized and meaningful, and that we can inhabit and interact within them and learn from them.
Even in our waking life we can use input that comes from sources other than the 5 physical senses to enrich our lives and make improved choices. These subtle feelings or sensations that some call intuition, gut feeling or just "feelings" (in the Star Wars films, for example), can provide input that we can use in our decision making process to achieve a better outcome for ourselves and others. Why is this? Because they come from a deeper, wiser, broader part of ourselves which isn't so stuck in time and space as we seem to be!
See also: Intuition: our inner guidance system
David Icke addresses this theme here: