This makes me wonder whether sleep is considered as a strategic asset in F1 seeing as we know how poorly functioning people become due to a lack of sleep and how important strategy is in F1. If you can't say that's cool, but it's interesting that Walker notes how Google among other companies has paid heed to the need for sleep and presumably reaped the benefits accordingly.
Yes I am convinced that it is important in F1. Teh race strategists only have the information to really plan the race after qualifying. This often means a lot of simulations and analysis and then decision making late into the night. Not the best time to make the decisions, nor is it the best way to get a good night's sleep for the big decisions the next day.
Really concerning is the training of junior doctors, which he does outline in his book as being bad for the patient and bad for the doctor (based on research not opinioneering), when they are effectively on call for 24 hours or more, whilst in a hospital.