I have a couple questions I didn't see addressed in the article. I like this tech, and am curious to learn more. 1. Are the changes detectable? 2. Are the cha

I have a couple questions I didn't see addressed in the article. I like this tech, and am curious to learn more. 1. Are the changes detectable? 2. Are the changes reversible? 3. Are the changes deterministic? 1 and 2 go toward whether this can be counteracted in some way. 3 is concerned with whether we end up making an alternate population of photos that can eventually tie back to the same real person.