Non-physist (obviously) but my layman's (idiots version) from all this is: when I die my feet will be older than my head, and my eyeballs (as each are the separ

Non-physist (obviously) but my layman's (idiots version) from all this is: when I die my feet will be older than my head, and my eyeballs (as each are the separate light comes) have different nows.