Discernment is necessary and similar to judging, but is protective and much less harmful. The main difference is that simple discernment has no emotion attached for aliens to trap us with. Judging always attaches dark "ranking weights," and discernment neutrally, simply, notices the differences, but never puts down or elevates the other. Discernment moves us away from danger here WITHOUT judging. Sort of like "That person is bad for me so I'll go elsewhere." vs. "What a real pure idiot!"