The big difference in reality is that your brain has an additional context (your working memory, which is shaped by sensory input) and it's mean() function is e

The big difference in reality is that your brain has an additional context (your working memory, which is shaped by sensory input) and it's mean() function is extremely approximate, so your outputs are more variable. We could give these models video/audio/etc "inspiration" and increase the temperature and they'd behave similarly.