[CamperBob2]

To control 51% of all those hashing power, an entity would need to power computers that works as much as that, along with paying for the equipment and energy consumption and whatever costs needed for the operation. Current estimates of Bitcoin mining energy usage stands at 71 TeraWatthour, enough to power the whole country of Austria.

Or they'd need to find a way to break SHA256. That's a risk you don't hear much about.

[rschachte]

yah, I have actually thought about this. Tbf, I'm not advocating strongly for or against blockchain. I'm just keeping an open mind in the same way when web 1.0 was being developed and researched.

I think it's fairly destructive to just discount new technology based on feeling. It really is a fun technology to learn and the more minds like we see on HN that research the topic, the more likelihood we will have in expanding the usefulness and security of blockchain use-cases.

[runarberg]

No, but you can discount the technology based on it’s historical records compared to it’s promises. Web 1.0 promised to be a good system of exchanging documents which could refer to each other. It delivered that pretty nicely and later improved on it.

Bitcoin promised to be a decentralized alternative to fiat currency and failed when it couldn’t scale to be even a tiny fraction of the global transaction. When people tried to improve on the original proposal they also failed at the very same thing while inventing new problems in the mean time. As of yet the only realized potentials of the technology are scams (which were never promised—at least to my knowledge).

Compared to Web 1.0 I think it is pretty safe for you to discount the technology based on a history of scams and failure to realize promised potentials.