Again, how does his choice to change settings to achieve certain personality markers affect his status? Well, it depends on how you define the machine. A machine is a device that amplifies human physical or mental capabilities to perform an operation (Machine). Deep brain stimulation involves implanting electrodes in the brain to induce changes to achieve clinical improvement in people suffering from depression. Essentially, Theo will be perceived as both human and machine, as the electrodes that receive electrical stimulation amplify his mental abilities in order to allow him to function properly in daily life. In the event that Theo receives treatment to simply treat his depression, deep brain stimulation would act as a restorative technology that would allow Theo to regain his normal function and identity. In reality, it's not much different from using implanted pacemakers or artificial joints. However, if this treatment goes a step further to optimize certain aspects of Theo's personality, then it turns into an enhancement technology, which can be perceived in a more negative way.