Not all of the information processed in the main spinal nerve bundles make it to the brain. Note that I'm not replying to the 'reaches our brain' portion of his

Not all of the information processed in the main spinal nerve bundles make it to the brain. Note that I'm not replying to the 'reaches our brain' portion of his statement with my counter-example. I think that's a very arbitrary place to delimit the human information processing system.