Once a new happening is witnessed a scientist will try to correlate the same with a theory he knows or try to make a new theory explaining the happening and he explains the path of that happening. In modern days everything is being connected to science. Once our elders say something, we will ask them what is the basis. If they are not explaining the same. we will never buy that theory and say that is a belief only. But in the olden days, this attitude was not there and the young people used to go by what their elders said.