remember just how much help he had with it though. Pace setters to keep him at exactly the right pace the entire time, a course specifically chosen to make it possible at a time of optimal weather for the attempt, a lead car to break the wind in front of him and shine a laser at exactly the right spot behind it to run for minimum wind resistance, and no other runners to contend with on the course for that perfect line or pace.
I could never do it even at my best years ago. But even for one of the best distance runners in the world like himself it's a whole lot more possible when you have plenty of help to make it happen.