Question

What happy fact allows us to study animal brains to learn about human brains?

Answer 1

I believe the answer is: The information systems of humans and other animals operate similarly

Cutting down an actual human's brain to study its function would potentially cause serious health risk that could easily resulted in death. Because of this, we study the brain of another animal instead in order to create a general framework regarding how human brain is working.

Answer 2

The fact that allows us to study animal brains to learn about human brains is that both animals and the human brain has similar properties in their brain and has a specific function in which is a way of saying that both are closely related to each other, making it possible to study human brain with the use of animal brains.