The fact that bitcoin can be so called "upgraded", which really just means changed, means it's not anti-fragile by default.
Agreed. But don't dismiss the future before it happens. Blockchains are only in the Pong and Pacman stage of maturity.
This is basically the essence of the argument; Roach is arguing historically, iamnotback arguing future-oriented (as per his Knowledge Age thesis)
What Gold already is, Bitcoin
may become.
Perhaps both are right. Perhaps not. Perhaps Bitcoin will last for 5, 15 or 50 years or only another 5 minutes. I do think it is beneficial to everyone reading this thread that Roach & iamnotback are able to state their views so well.
Even if it only lasts my lifetime and never compliments Roach's 'noble metals', to be a relatively early adopter when the tide of progress seems to be transitioning to internet based in a risk worth taking. I think Roach is even saying this too (that Bitcoin may continue to rise in popularity/utility/price). I don't know if I'll be able to keep btc as btc for long term or if btc will ever evolve to SoV. Here's Vinny Lingham putting it way better than I ever could
https://vinnylingham.com/bitcoin-commodity-store-of-value-or-digital-currency-93457cd27c9c#.zc1y6hvdbFor me, I try to think in terms of risk/reward. My risk is extremely low and quantified while my reward is possibly life changing. I already have gold and am covered in the Roach eventuality.