I recall stating, in the aftermath of the Columbia disaster, that I did not expect that the Shuttle program would continue, or if it did so, that there would be no more than four further flights. I felt that the flaw in the wing leading edges was unrepairable, and that the risk would preclude any more launches.

One could argue whether the risk has actually been reduced, but at least the crew is routinely scanning for damage before re-entry and has options for an extended duration in space if a flaw is detected.

Since this is the fourth flight, I am not yet technically wrong, butit is clear that there is no intention to terminate the program early. I therefore ask you all to witness my slow and painful consumption of a large and dry serve of humble pie, with optional hot sauce...