These ponderings attempt to let themselves be appropriated by the event. (Beiträge zur Philosophie (Vom Ereignis), Martin Heidegger, 1936–38/1989)
https://youtu.be/rH_c4CB61B4?si=59WTw045aQkrU7vw
https://youtu.be/2TND6NjJ9Mk?si=oLjCrJ9yBRIzkZTK
which means, that you cannot go back to, and survive in the Pleistocene, after all