If you really know, then yes. On those on flight 93 seemed to know. But the other two planes didn't and they didn't do anything. Totally reasonable.
Where I in the hypothetical train scenario, I would not pull the lever. Because in truth, I don't <i>know</i> that the five people will be killed. One of them may look up in time, shout, and all of them scatter. But the one loner? He may be too absorbed in his task.
The details in these kinds of things really matter. They make or break the morality of the scenario. And the details in the train & lever scenario are implausible. The supposed level of certainty is too high.
Where I in the hypothetical train scenario, I would not pull the lever. Because in truth, I don't <i>know</i> that the five people will be killed. One of them may look up in time, shout, and all of them scatter. But the one loner? He may be too absorbed in his task.
The details in these kinds of things really matter. They make or break the morality of the scenario. And the details in the train & lever scenario are implausible. The supposed level of certainty is too high.