I thought it was pretty well established that consciousness is a kind of illusion; That we evolved the ability to extrapolate persona in others which was/is us

I thought it was pretty well established that consciousness is a kind of illusion; That we evolved the ability to extrapolate persona in others which was/is useful to predict future actions and form bonds. Consciousness is just this ability turned inward. I've seen a lot of evidence for this over the year from neurologists, psychologists etc. Am i wrong, or is this a 'mystery' until we get an answer we like?