Yes Wiley, it'd need a lot of kinetic energy to bounce off a runway at 35000ft!!!
Not entirely relevant to the thread I know, it was just the engineers misgivings about such a large aircraft with the ability to have a full engine loss on the TO roll, that this thread reminded me of. But full credit to the engineers at Boeing & naturally, the crew, to get it home again.
As for telling the pax, damned if you do, damned if you don't! I immediately thought of the JAL 747 that lost it's tail & flew for approx 30mins until hitting a mountain. The pax knew & were able to write messages to their loved ones, but Gee-Zuz, what a hell of a way to spend 30mins!