Researching That Which Is Already Known

By following human news, I have come to the conclusion that there are quite a few humans making the news who are scientists of one kind or the other. Some of these do interesting stuff, such as mapping dog DNA or developing Lunar landing programmes. Others seem to research that which is already known.

At the University of Padua in Italy, scientists have studied the way dogs recognize human faces. They have concluded that dogs recognize the faces of their own humans and prefer their own humans over unknown humans, as if not every human living with dogs already knew this. The study was defended in part because it was supposed to measure to what extent dogs preferred their own humans, as if this does not vary from dog to dog and from time to time depending on the dog's mood.

I wonder who granted the money to this research project. It cannot have been a human having dogs, because a human with dogs would already know the answers.

Would a dog ever research the extent to which humans recognize dogs and if they prefer their own dogs? No, because we already know they do.