I glance for a brief moment at a trio of women, two facially unveiled, the third thinly veiled. The face of the veiled one attracts my attention. The visibility of her face is helped, not hindered, by its being veiled. I generalize: it is not always and everywhere the case that veils are impediments to visibility. In some circumstances veils reveal by concealing.
This insight, I suspect, can be put to good (analogical) use. Just how, however, presently escapes me. So I file it away for future reference.