Data accumulated using the scientific method perhaps? Once you have the data, you can make inferences to the best explanation. If the theory held to be the best explanation is falsified, that becomes part of the data. It then ceases to be the be the best explanation.
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Data accumulated using the scientific method perhaps? Once you have the data, you can make inferences to the best explanation. If the theory held to be the best explanation is falsified, that becomes part of the data. It then ceases to be the be the best explanation.