Why are they beginning the prelim heats that late? Given the number of swimmers and heats at these trials it should have been rolled back to 10AM if not earlier. Tomorrow's session will be especially tough given how long it might go and the three finals in the evening. That's already a tough double but with less time in between sessions it's not the ideal situation. It will be especially hard on the women's 400IM swimmers. They're going to have to swim lights out just to make the finals. You don't want to run such a big meet that congests prelims that close to finals. Given that they're going to have the night between in Beijing it's not really a good approximation of the Olympics either so the cramming isn't needed in that sense.
Why are they beginning the prelim heats that late? Given the number of swimmers and heats at these trials it should have been rolled back to 10AM if not earlier. Tomorrow's session will be especially tough given how long it might go and the three finals in the evening. That's already a tough double but with less time in between sessions it's not the ideal situation. It will be especially hard on the women's 400IM swimmers. They're going to have to swim lights out just to make the finals. You don't want to run such a big meet that congests prelims that close to finals. Given that they're going to have the night between in Beijing it's not really a good approximation of the Olympics either so the cramming isn't needed in that sense.