I'm pretty sure everybody on this forum is the type of person who would help others. It's just the nature of preparing to survive. For example, while camping or hiking, it's just a very common thing to help somebody who needs First Aid, some water, survival advice, or whatever. It's just not a big deal. It's just kind of like brushing teeth at night. It's just something we do.
Overall, I think people are pretty helpful in the immediate aftermath of a catastrophic event. We hear stories about what happened during 9/11, Katrina, etc.
However, when the adrenaline wears off, then what do people do? I am more impressed by people who help others when it is not so dramatic or glamorous to do so, for example, situations that would never make it to a movie scene.
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If you're reading this, it's too late.