When is “unfalsifiability of X is evidence against X” incorrect?′
In some sense this must be at least half the time, because if X is unfalsifiable, then not-X is also unfalsifiable, and it makes little sense to have this rule constitute evidence against X and also evidence against not-X.
I would generally say that falsifiability doesn’t imply anything about truth value. It’s more like “this is a hypothesis that scientific investigation can’t make progress on”. Also, it’s probably worth tracking the category of “hypotheses that you haven’t figured out how to test empirically, but you haven’t thought very hard about it yet”.
There may be useful heuristics about people who make unfalsifiable claims. Some of which are probably pretty context-dependent.
In some sense this must be at least half the time, because if X is unfalsifiable, then not-X is also unfalsifiable, and it makes little sense to have this rule constitute evidence against X and also evidence against not-X.
I would generally say that falsifiability doesn’t imply anything about truth value. It’s more like “this is a hypothesis that scientific investigation can’t make progress on”. Also, it’s probably worth tracking the category of “hypotheses that you haven’t figured out how to test empirically, but you haven’t thought very hard about it yet”.
There may be useful heuristics about people who make unfalsifiable claims. Some of which are probably pretty context-dependent.