Re: "We won't reach minumum safe distance if we don't leave immediatel
Actually the line still makes total sense but I'm too tired to explain why in a huge amount of detail.
Suffice it to say that an "unsafe distance" doesn't have to be the same thing as "a distance at which we have no possibility whatsoever of escape". After all, they barely made it out alive. I would say that they had passed safe distance long before they actually tried to get away.
"Every time we let ourselves believe for unworthy reasons, we weakon our powers of self-control, of doubting, of judicially and fairly weighing evidence."
- W.K. Clifford, The Ethics of Belief