R.A.W

What is a reality tunnel?
Your reality-tunnel is being constructed during the course of your life by your experiences, thoughts and belief-systems. Your thoughts and belief-systems are basically based on language. Try to think without using internal language! Thinking and all your belief-systems are hence built upon language:

The real secret of magic is that the world is made of words, and that if you know the words that the world is made of, you can make of it whatever you wish.

(Terence Mc Kenna)

Timothy Leary coined the term reality tunnel and it was then popularised by Robert Anton Wilson. It refers to the concept that with a subconscious set of filters formed from their beliefs and experiences, everyone interprets this same world differently, hence “Truth is in the eye of the beholder”.

Is there objective truth?
This is not necessarily meant to imply that there is no objective truth; just that our access to it is mediated through our senses, experience, conditioning, prior beliefs, and other non-objective factors. The individual world each person occupies is said to be their reality tunnel. The term can also apply to groups of people united by beliefs: we can speak of the fundamentalist Christian reality tunnel, the scientific materialist reality tunnel, or the libertarian reality tunnel.

Once the fiction of one ‘reality’ dies as a concept, and the operational fact of ‘realities’ (plural) becomes generally recognized, we might all discover that human beings can actually live together without constantly making war over who has the ‘real reality’.

You create one reality-tunnel at a time out of a phalanx of possible reality-tunnels. You can learn to change your reality-tunnel. You can experience many reality-tunnels.

(Robert Anton Wilson in ‘Cosmic Trigger; Volume 2′)

Link: Reality-tunnel: How beliefs and expectations create what you experience in life