Seeing is believing, while hearing is deceptive.

Even if the mind consciousness tells the manas ten thousand times that the bowl of water is poisonous, when one is thirsty, can the manas steadfastly and resolutely persist in not drinking? If the manas personally sees that there is poison in the bowl of water, even when dying of thirst, would the manas still want to drink it?

Is knowledge instilled from outside the same as that which is personally realized? "Seeing with one's own eyes is real; hearing from others is unreliable"—isn't this exactly the principle here?