Truths

What is truth?
A truth is a fact that really exists in a form as the knower of that truth knows it.
So, from the view point of experiencer everything he experiences as such is true to him. but the same thing maybe viewed differently by someone else, so actuality of that thing is different from the perception of viewer.
For example fire has radiation, lighting as its features is the fact about Fire, but to a person who is blind can not see its lighting, but he can feel its heat only , so for him heatness is the only feature of fire.

So truth about any thing is based on the perception of the experiencer of that thing.
So there can be some missings in our perceptions about anything.(missing maybe positive or negative).
So there can be no chance to eradicate the experience of someone as complete illusion even though the person is having some defect.

While that is the case, we can never rule out the world existence as dream. it is pure illogical.
Only thing we can say is there maybe another experience about the world different from current if at all we believe a plane which is unrelated to world.