inference
the scientific method
natural
The Scientific Method begins with posing questions on the natural world.
in brief ayurveda is natural and allopathy is scientific
making a prediction
Conducting an experiment
Conducting an experiment
analyzing the data
Conducting an experiment
The systemic approach to discovery is commonly known as the scientific method. Aristotle is known to help discover the scientific method.
They can be, if their research is into a scientific subject and follows the scientific method. Note, not all researchers are scientists.