Proposing theories and then testing them in data is what the scientific method is. Many theories were proposed before they were confirmed or refuted in data. E

Proposing theories and then testing them in data is what the scientific method is. Many theories were proposed before they were confirmed or refuted in data. Einstein's theory of general relativity is a famous example which was proposed before it could be confirmed by Eddington during a solar eclipse. Black holes themselves were also predicted by Penrose and Hawking before their existence was confirmed.