Clif's prediction would have been right if Silver prices weren't rigged since decades. The biggest threat to the US-$ was Gold and Silver (remember Paul Volcker!) as real money, as a real store of value throughout centuries! And they still are a not-only-alternative but a "must have"! But in my opinion, Cryptos will bring the FIAT paper system down to its knees; it's only a matter of time depending on "when will the common citizen recognize that the 'hunger games' of inflation is stealing his money on a daily basis, and when will be the day they're losing trust!?" By the way... - Clif is one of the brightest and wisest man I've ever had the luck to listen to! Cheers!