Blindness in Knowledge

They are not able to see the right picture with its actual presence, Whoever have a partial/complete blindness.

Because of their blindness, they will depend more whoever holds their hands during a walk in a footpath.

Also they are forced to believe on other's eyes to realize the actual image.
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The world is also like a footbath. We should check.
Do we not have a blindness in knowledge/understanding.?
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