Title text:
People looking for the gaps in our understanding where the meaning of consciousness or free will might hide often turn to quantum uncertainty or infinite cosmologies, as if we don't have breathtakingly complex emergent phenomena right there in our freezers.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3144/
More akin to marbles on a floor or a table shuffleboard setup!