If it does turn out to be effective in slowing it down, that's still a major win. I've had relatives with the disease (which probably increases my risk) and I know what it looks like from the outside. I've tried to imagine what it looks like from the inside, slowly losing your "self". I'll take hope for slowing that process down.
Like the alien megastructure around Tabby's Star? Or that single, two-second signal that one station received that definitely shows proof of aliens, probably the ones living on the earth-like Proxima b?
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