Do the math yourself. Actually, it would probably take a lot longer than 3,171 years since it takes more than 1 second to say the large numbers. If you assume the average person is 150 pounds and the average brain weighs 3 lbs. The average spinal cord is 45 cm long in men and 43 cm long in women. The spinal cord weighs about 35 g.
Information travels at different speeds within different types of neurons.
Check the math out yourself. More on the speed of signals in the nervous system . In other words, what causes people and animals to do the things they do. This could also include investigations of what parts of the brain are connected to other parts. Let's add up what we have so far.