If a theory doesn’t make a testable prediction, it isn’t science. It’s a basic axiom of the scientific method, dubbed “falsifiability” by the 20th century philosopher of science Karl Popper. General ...

Can a theory that isn’t completely testable still be useful to physics? What determines if an idea is legitimately scientific or not? This question has been debated by philosophers and historians of ...

Karl Popper's "principle of falsifiability" is one of the few philosophical ideas that physicists regularly mention. But science is far more complex than it suggests, says Robert P Crease As a ...