If your EFS is more than double a heteropneum’s amplitude, you can get a (perfectly accurate) recording of what your EFS would have been had you used a different resonance on it. The in-universe justification for this is that Sphere scientists can observe—and infer things about—alternate timelines under the right conditions.
If your EFS is more than double a heteropneum’s amplitude, you can get a (perfectly accurate) recording of what your EFS would have been had you used a different resonance on it. The in-universe justification for this is that Sphere scientists can observe—and infer things about—alternate timelines under the right conditions.