The trouble is, you can think you're dealing with a Bob, but you're actually dealing with an Alice, even after enduring multiple crises that didn't trigger their specific type of badness.
https://www.theguardian.com/commentisfree/2014/jun/03/how-i-...
But as fun as this line of thinking is, my initial charitable post was only asking for a kind of "superficial" indistinguishability. As long as you don't think about it too hard, y'know?