Well, what we call consciousness: that continuous change in state between perception, search(perception-memory-prediction), focus, impulse, decision, and action – serves almost entirely as ‘the search for opportunities’ for acquisition of the host of things that are valuable to us.
It’s not complicated.
I am not sure why consciousness is so hard to understand. It’s not. Brains are not gears. Our various charges are affected by momentum, resistance and capacitance, and continuous iteration (echoes) create persistence of perception just as much as our eyes create persistence of vision. That’s consciousness.
We seize opportunities for reward.