"Assuming they get within range of the wall to blow it open, who's got the explosives needed to break through that wall?"

"being that this site is dedicated to survival most people are not looking for the most efficient way to kill themselves."

"The other huge gaping problem I see is that there is no assurance that the location will have any source of water besides rain. That's a big if with so many people and such water-intensive crops. I guess that depends on location, of course."

"Have you given any thought to making the design rounder instead of linear? As it is now I see one startling flaw -- anybody with access to any sizable amount of explosives could fairly easily gain access to the retaining wall for the final tier and blow it, resulting in an entry point for whatever may like to enter. As it is this holds true for any of the tiers -- there's a lot of perimeter to cover, elevation advantages regardless. All it would take is one determined mothertango to go in under the cover of heavy storm at night and compromise you.

Plus, getting something like this to not stick out like a sore thumb on any small island nation will be hard. It'll generate talk and, in the event of something happening, enter the minds of a lot of locals. Not to mention getting it through any sort of local code or aesthetic requirements would be adventurous."

"What about left over armed forces, they may become raiders, and they would have explosives, decent ones. Im not saying they all would, but it is a possabilaty that when SHTF, and there left standing, who's to say they wont take what they want and shoot all who say no.

I know Pedro's plan is for an island but the navy's will still have there boats, planes an helicopters etc. and could become pirates (not to metion the actual pirates around, and yes i know there arnt many of them)

Now i know that most militarys have a sense of honour and wouldnt become some evil f**kers looting and burning every where they go, but look at what the guys in 28 days later did, those of you who have been/are in the military can you 100% hand on hart say there was no one who would do that whilest doing your service, and if he is a high ranking officer its would be even worse

Now im not trying to flame or start a argument, i just feel its something to think about, caus who knows 100% percent how they will act a few months/ years after sociaty has ended, what you wouldnt do now, you may do when there are no police around or socities rules are no longer in force"

"I guess the larger overall issue I have with it is that it's so exposed in pretty much any environment. Not to speak of the difficulty in getting it past local ordnances and greatly increased cost, it just presents itself as a target with the resulting harassment and stress that brings about.

It seems like something similar with a lower profile could be accomplished with fewer resources. Granted, it would have its own set of problems, too.

The other huge gaping problem I see is that there is no assurance that the location will have any source of water besides rain. That's a big if with so many people and such water-intensive crops. I guess that depends on location, of course.

Go ahead and negate me some more. The point of having a community for this is to bring about debate, increased comprehension, and refinement of individual ideas, correct? What better way than through discussion."

"depends on what you are refering to as a "nitrate explosive". for the most part you are talking about compounds that are bulky, heavy, and extremely unstable.

being that this site is dedicated to survival most people are not looking for the most efficient way to kill themselves."