Walter stood, staring at Dipper. Ungrateful. He had assisted the child with a problem and instead he saw fit to critique how he had done so. His expression remained carefully blank, with only a touch of dismissiveness snaking in.

"It is a good thing I could benefit from this. Otherwise I should have left you to suffer with it." Life is suffering and humanity is cruel. The child wouldn't learn that with his intervence. But, the combat experience was more beneficial than teaching Dipper what he would learn on his own, in time.