With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: More than anything else, Dumbledore has a deep curiosity about love, frequently reminding Harry that love was the greatest mystery of all. Dumbledore doesn't believe in the good in no one and insists on giving only one chance. The greatest example of this is Dumbledore's relationship with Snape, in whom Dumbledore is willing to place a considerable amount of blame because he showed remorse and messed up once. Dumbledore is rarely perceptive and emotionally intelligent; his knowledge of a person's true personality doesn't go beyond simply being a good judge of character. This is sometimes even more unclear though, when we can't understand why he can't parse Voldemort's psyche, which he begs Harry to give up on understanding, failing to find where Voldemort's horcruxes are hidden.
text_B: Does Dumbledore have correct insights into both Snape and Voldemort?
NO.