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True, but they can always outspend and outlast a single person or smaller group.

I think diversity is the key.. The more options you have the harder it is to lose everything. So gold, silver, cryptos, and cash should all be an option because they all have a part to play. As does a store of food and water but also a veg garden or a few small animals and a safe place to go in an emergency.
The more options the better

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