Why did they call it section not heat on the front page?
Probably cos they never intended them to run a final. And they didn't want Bolt to face Blake.
Weir is a world class 400 guy. Blake went against him and lost. Bolt would have wanted to win.
As an aside, going out 'hard' or less hard makes no difference when you are sprinter like Bolt. You'll still feel like sheet in the last 100 m.
Bolt was more focused on looking easy than he was interested in running fast. That doesn't get a fast 400. And may make him back off from doing too many more. Or he may go out pissed and run a hard one that wil challenge the world record. But he won't find it easy.