grand theory, n.All

A Grand theory (n.) in ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠decline props itself up with ever subtler acrobatics, which prove only that it is time to move on.