We detached this subthread from https://news.ycombinator.com/item?id=18802222 and marked it off-topic.
Blockchain was the first serious attempt at solving the problem of distributed concensus without centralisation. One application of this outside of cryptocurrency is to DNS (see Namecoin).
Cryptocurrencies at the very least make black market trading more efficient. See Silk Road.
Also, the analogy to alchemy needs a lot more explaining. I don't see any connections.
Gold is a very apt comparison given the gold-bug rhetoric they were in pushing deflationary currency despite its history of failures resulting in fiat currency. The gold standard resulted in /many/ wars for the sake of gold just so that they wouldn't have their economy size capped by lack of currency - leading to considerable loss of /real/ value and massive suffering. Ironically having too much gold also created inflation issue. Having currency that can inflate with the economy instead of something else arbitrary is what the strength of fiat currency is.
Wow, this is such a wrong statement.
Consensus in general has been in CS since its dawn... How childish a person would think CS scientists wont consider this problem without centralization...
The internet itself is a big movement toward consensus. Just look at tcp/ip and Ethernet and dns and lots of other protocols that reach consensus without centralization. But it’s more of a wet consensus than a dry consensus because the negotiation over routing tables happens between users and admins.
DNS and IP have roots, but there are multiple roots and methods for negotiating.
None are perfect, as blockchain isn’t perfect, but are certainly serious attempts.
Maybe the most successful is the IETF RFC process for decentralized consensus.
There are also good examples like the Apache Foundation for distributed consensus.