Why does brain size not matter when comparing the intelligence of different species while having bigger organs like hearts, lungs, kidneys allows those organs to function better?

Question

Why does brain size not matter when comparing the intelligence of different species while having bigger organs like hearts, lungs, kidneys allows those organs to function better?

In: 5

Answer 1

Intelligence is more a factor of how the neurons in the brain communicate with each other, so density, distance, connections per neuron etc all play a massive role

It’s like the difference between a modern computer and one of those 1980s IBM mainframes that takes up a small warehouse – the size is not the most important difference