tv show encapsulates identity perfectly

[patricknotstar]

In Severance, memory is split through a brain implant that creates two identities: the “innie” (work self) and “outie” (personal self). The innie only exists at work and has no memory of life outside, while the outie knows nothing about work. The implant switches between these selves automatically, trapping the innie in a perpetual work loop while the outie enjoys a stress-free life. 

They are the same person yet split into two. The duality is an illusion, yet feels real to each side. With outies selfishly going against the interest of there innie's.