The bee brain weighs only a few milligrams, but can perform certain tasks like mammals, such as leading the way for companions, building homes, etc. Elephant brains are 5 million times the size of bees, but they are extremely inefficient. Neural signals come from one end of the brain It takes 100 times as long to pass to the other end and from the brain to the toes. Some people think that the human brain may not be as extreme as an elephant or a bee, but as long as it evolves, the number of neurons will increase And we will be smarter. If the following items are true, what would most challenge the above claims? ['The brain of a cow is 800 times larger than a mouse, but a cow is not much smarter than a mouse.', 'Neurons are proteins used to generate electrical impulses, and they are inherently unstable.', 'The most obvious way to make human brain stronger is to increase brain capacity.', 'Bees have limited brain capacity, but can maximize the function of the nervous system.']