Inconclusiveness of science

Nature 
Science functions in incremental pieces, thus scientific findings are often tentative and inconclusive and may even contradict themselves. The public has no way of knowing how long a much publicized theory will actually be 'correct' - or in vogue.
Incidence 
For years scientists have correlated high blood pressure with a diet too rich in salt, but recent research reports that high blood pressure may actually result from a diet deficient in calcium, potassium, vitamins and salt.
Broader 
Aggravates 
Value(s) 
Type 
(F) Fuzzy exceptional problems