BsKing has put me on to a description of the Motte and Bailey Fallacy. I have seen this many times, and it is infuriating to deal with. We Christians use it on each other altogether too often. This suggest to me that it is not always a deception, but rather a sign of an emotional or experiential belief rather than a logical one.
Eyes surgery a success thus far. Blurry, no discomfort.