This occurs constantly and continually inside the mind of every conscious human, it is what we call "being conscious".
This constant and never ending evaluation of all observations cannot be turned off, when turned off a person is "unconscious".
This is our human security and survival system, impressed into us for survival in a predator and prey environment, and is the seat of our consciousness: comprehension is a running simulation of all our observations for the purpose of our safety and self preservation.
Today, our environment is largely social and abstracted from "fight or flight", but our predator and prey dynamic is as present and strong and required as it ever was.