Are you thinking that the shortest program that finds Felix in our universe would contain a short description of Felix and find it by pattern matching, whereas the shortest program that finds a human mind would contain the spacetime coordinates of the human? I guess which is shorter would be language dependent... if there is some sort of standard language that ought to be used, and it turns out the former program is much shorter than the latter in this language, then we can make the program that finds a human mind shorter by for example embedding some kind of artificial material in their brain that's easy to recognize and doesn't exist elsewhere in nature. Although I suppose that conclusion isn't much less counterintuitive than "Felix should be treated as a utility monster".
Yeah, there's a lot of weird stuff going on here. For example, Paul said sometime ago that ASSA gives a thick computer larger measure than a thin computer, so if we run Felix on a computer that is much thicker than human neurons (shouldn't be hard), it will have larger measure anyway. But on the other hand, the shortest program that finds a particular human may also do that by pattern matching... I no longer understand what's right and what's wrong anymore.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.