This and other skulls in the collection show how humans, or at least some courageous types, started to mix physically with technology. This one used disks for enhancing his memory: they slid somewhat awkwardly into his skull and were to be switched on with a button. Further research shows that memory disks were rapidly superseded by miniature Si-chips, and people after him could make less invasive interventions to enhance their capacities.
(See also here)