The attacks on the smaller blockchains are good news. Blockchains have the biggest bug bounties in history, and in time we'll all learn what works. I've never

The attacks on the smaller blockchains are good news. Blockchains have the biggest bug bounties in history, and in time we'll all learn what works. I've never heard anyone claim blockchains are immune to double spending. There's evolutionary value behind all the experiments. And they're all experiments, including Bitcoin.