Fallacy of Impossible Conclusions

The rhetorical trap of demanding that your opponent reach a conclusion with a level of certainty, completeness, or finality that is literally unattainable in any human discourse. It's the opposite of jumping to conclusions—instead of accepting flimsy evidence as sufficient, it rejects all evidence as insufficient unless it meets impossible standards. In online debates, this fallacy appears when someone demands "absolute proof" of a historical event, "100% certainty" about a scientific finding, or "complete information" before any conclusion can be drawn. The goal isn't to find truth but to create an epistemic black hole where no conclusion can ever escape. It's a metafallacy because it abuses the legitimate principle of "don't jump to conclusions" to justify never concluding anything at all.

Example: "He demanded I provide every single vote count from the 1876 election before I could claim it was contested—a perfect Fallacy of Impossible Conclusions designed to make historical consensus forever unreachable."

Fallacy of Impossible Conclusions by Dumu The Void March 11, 2026