For a time in the 1970s, the terms survivalist and retreater were used interchangeably. While the term retreater eventually fell into disuse, many who subscribed to it saw retreating as the more rational approach to conflict-avoidance and remote "invisibility". Survivalism, on the other hand, tended to take on a more media-sensationalized, combative, "shoot-it-out-with-the-looters" image.
I sincerely feel that the best of all of us comes out in a disaster, with exception to a few. These few are the ones that this article does not or should focus on. Avoidance of perspective team members should be steered more by ethics, integrity and morality. I personally avoid thieves, liars and evil-hearted persons, and lastly the drama queens or snakes (team busters). Everyone else is trainable, deserving of a chance and usually becomes a viable team member in a short amount of time. But back to Powderkeg’s comment, “I can’t save the world, only my family.” This is another one that wasn’t mentioned in the article – The Save The World or Everyone Prepper.
The problem with most of you prepper types is that you are way too early and wasting your energy. Yes of course I know what you’re all thinking is that we all must be prepared always and yes that is after all the whole point. But all things considered, past present and future .. technology is the real enemy and it has not yet fully evolved. Keep this date in mind and any years that are multiples of 9, (9-18-2027), have enough fuel to make it to the dessert, remove the battery and SIM cards from devices, bring dried food and chlorinated water water and dig in deep, good luck.
Untold numbers of people wind up suffering frostbite, shock or hypothermia every year because they didn’t have adequate survival gear when the weather on their wilderness adventure took a rapid turn for the worse. But it doesn’t have to be that way. The Titan 2-sided Mylar Survival Blanket is light as a feather and yet capable of retaining up to 90% of your body heat.
For global catastrophic risks the costs of food storage become impractical for most of the population  and for some such catastrophes conventional agriculture would not function due to the loss of a large fraction of sunlight (e.g. during nuclear winter or a supervolcano). In such situations, alternative food is necessary, which is converting natural gas and wood fiber to human edible food.
This group is concerned with the spread of fatal diseases, biological agents, and nerve gases, including swine flu, E. coli 0157, botulism, dengue fever, Creutzfeldt–Jakob disease, SARS, rabies, Hantavirus, anthrax, plague, cholera, HIV, ebola, Marburg virus, Lassa virus, sarin, and VX. In response, they might own NBC (nuclear, biological and chemical) full-face respirators, polyethylene coveralls, PVC boots, nitrile gloves, plastic sheeting and duct tape.
Earthquakes, tornadoes, and hurricanes can cause you to leave your home or even be trapped there. Roads could be blocked due to fallen trees, power lines, or even damaged earth from the natural disaster. Rescue crews can not be in all places at once. You may have to wait it out for quite a while before its over. You won't be able to go to the store or to the corner market.