Recent content by Neuron

10! I assume is the mathematical expression for 10 factorial, which is $3,628,800.

Brain/nervous system enhancements already exist and are in use in the medical field. Look up cochlear implants and auditory brainstem implants (to restore hearing), deep brain stimulators [DBS] (for Parkinson's disease and a few other conditions), and Neuropace (for medically intractable epilepsy).