Physicist Carlo Rovelli explains that our fundamental quantum understanding of nature does not include time or the notions past and future. Only in the second law of thermodynamics does the march from order to disorder appear in sequence. But order itself is a perceptual notion that is not consistent between observers. So, likely, we have socially constructed the illusive notion of time just as we have constructed the notion of consciousness.
YOUTUBE -6rWqJhDv7M Published on Jun 13, 2018.
See also, Daniel Dennett on the evolution of the human brain. bbc 
Consciousness is the brain’s user illusion of itself. It is a format of internal unconscious representations where the representations are designed to gloss over the inessentials. The brain doesn’t need to know everything that is going on in the brain.
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Episode 2: Carlo Rovelli on Quantum Mechanics, Spacetime, and Reality. July 10, 2018. interview