I tend to think this is true, but not true in the literal sense of how so much is taught. One has to understand that our version of experience and reality and whats out there, is a product of not only our minds but the programming within us on many levels. And this programming so to speak, is not only shared among us all, but is transmitted to and from us all on many levels of our being, from the conscious mind, even down to the subconscious and unconscious levels as well, to the very core of our soul even. We experience this version of mentality of our consciousness and reality and whats out there from all that programming, again on so many levels. If that programming was different, in our minds, bodies and souls, then reality and the universe as we know it would be totally different and experienced as such in every aspect. The problem arises when we tend to think its only this or that way,,like its set in stone or could be no other way. One simple example might go like this, imagine your body was made out of what is called radio waves, and you walk up to a wall, regardless if we say you could or could not see the wall, you could so easily walk right through the wall right? In effect the wall may not even exist to your consciousness or body, nor even exist in your version of the universe, from that perspective. It all relates to frequencies of matter and energy and how such interacts with other forms of matter and energy.