My experience with the Back to Eden method is very mixed at best. First, if you don’t stir or disturb the ‘chips’ to some level you can experience mold growth.I have had some weird fungi sprout and grow – all depends on the source of the chips. Second, the decomposition of the chips can rob your soil of nitrogen and other things – again depends on the source/makeup of the chips. 3) Where the heck are you going to get a constant supply of wood chips you would need when SHTF?
Permaculture is great idea but does take time to establish and, personally, don’t believe it is an efficient method when you need to collect your harvest for processing. Not to say some use would not be good – but to solely rely on this method to feed yourself and others- especially with little gardening experience – not a proponent myself. Each to his own.