Is it always right to know the truth? Can it be right to talk to plants and expect them to answer, or believe in pink telepathic dragons? Is it really wrong? What if it saves lives? Is the sky blue above the winter clouds?
I was taught, in all things do drisha vahakira to seek emes la’amito. And we see the “seal of HKB”H is emes, so that emes is the glue of this creation. Of course there are places where one need not dig, and there are Midrashim that indicate that truth was somewhat handicapped in the course of Creation. This is not lost on certain voices within hareididom, who would have us believe we are not to be trusted to see, hear, or think certain things.