alt Hacker NewsMultiple passes doesn't make it system 2. The defining characteristic of system 2 is consciousness which is expensive and slows down the system.
So to talk about system 2 in AI we need to talk about consciousness. As long as AI is not officially conscious there is no System 2 thinking implemented
Consciousness is ill defined hogwash when used in such descriptions.
The process of internal refinement without external action however fits.