My view of this is that Caplain (and likely the poster) are likely confused about what it means for physics to “predict” something. Assuming something that looks vaguely like a multiverse interpretation is true, a full prediction is across the full set of downstream universes, not a single possible downstream universe out of the set.
From my standpoint, the only reason the future appears to be unpredictable is because we have this misguided notion that there is only “one” future, the one we will find ourselves in. If the reality is that we’re simultaneously in all of those possible futures, then a making a comprehensive future prediction has to contain all of them, and by containing all of them the prediction will be exact.
My view of this is that Caplain (and likely the poster) are likely confused about what it means for physics to “predict” something. Assuming something that looks vaguely like a multiverse interpretation is true, a full prediction is across the full set of downstream universes, not a single possible downstream universe out of the set.
From my standpoint, the only reason the future appears to be unpredictable is because we have this misguided notion that there is only “one” future, the one we will find ourselves in. If the reality is that we’re simultaneously in all of those possible futures, then a making a comprehensive future prediction has to contain all of them, and by containing all of them the prediction will be exact.