All knowledge is incomplete and partial, which is another way of saying "wrong", therefore all "vision" is hallucination. This discussion would not be happening

All knowledge is incomplete and partial, which is another way of saying "wrong", therefore all "vision" is hallucination. This discussion would not be happening without hallucinators with a crowd sharing their delusion. Humanity generally doesn't find the actual truth sufficiently engaging to accomplish much beyond the needs of immediate survival.