We perceive the world around us through our senses. The senses are capable of identifying objects around us. If a sense organ is faulty or weak then accordingly the world perceived through such a sense organ would definitely be different. For instance if a person is deaf then there is no music in this world for him. Similarly, for a person who can't see green colour, all trees would be colourless. On the contrary, with a strong sixth sense, one can see the spirits, ghosts and similar objects dangling in the surrounding space.
I find that the world is not absolute rather it is unreal. (मिथ्या)
Baba says that it is because of delusion of "Body identification with the self". (देहा भ्रांती ) This delusion is the basic cause of the serpent called ego। It is this serpent that surfaces time and again to delude you to believe the material objects around you to be real. The shame and fame inflicted upon your body is taken by this serpent to your inner self and brings about momentary grief or joy.
Whereas the body is only a vehicle to take you across this sea of life. Therefore baba gave the following simple advice:
मानस भज रे गुरु चरणं. दुस्तर भव सागर तरणं
Thought to ponder….
Whoever the individual, however scholarly, he cannot escape delusion and so he is subject to grief, which acts upon as a break upon activity. Arjuna, the great hero, capable of great renunciation and great wisdom, is deluded by the awful needs of war, and his grief handicaps his activity too. He confuses the body and the self; he starts identifying the two. He imposes on the real self (the Atma - ever untouched by the characteristics of the moving, changing world) the unreal and ephemeral nature of the world and takes this delusion to be true. This is the tragedy not only of Arjuna alone but of all humanity.
(Bhagwan Sri Sataya Sai Baba)