fictionalism, n.All

Fictionalism (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠a demand only a philosopher could make: to behave as though one believed what one knows is absurd.