The only reality is one within

IF validity through mathematical/logical/nature (left brain)
AND IF truth through jihad/stand up against Pharaoh (right brain)
THEN pure dharma / complete enlightenment
ELSE delusional
If someone shuts his eyes to the remembrance of the All-Merciful, We assign him a (Qareen) shaytan who becomes his bosom friend — they debar them from the path (of complete enlightenment) yet they still think they are guided! (Q43:36-37)