Nice, Hiro. I critiqued the opening of the book early in the thread. RY's data he posted in mapmyrun and linked in Facebook contradict info in his book about the initial 3 marathons in 3 significant ways: (1) mapmyrun order was 3:19, 3:28, 4:07 so he got slower not faster; (2) book says route was loops in Richmond Park, but mapmyrun shows point to point from Twickenham to Regents Park, which then rules out Eva as a witness to his initial marathon as the book claims; and (3) mapmyrun says it was Day 2 when he ran 2 marathons in a day, not Day 1 as the book claims. I point this out simply to say RY contradicts himself, quite obviously. I think the book exaggerated the claims that were already an exaggeration in the mapmyrun data.