Good analogies help understanding and hacking bitcoin with quantum computers

About half way thru the article explains superposition and entanglement using an analogy of spinning coins. It’s an interesting analogy and one that could help folks who don’t understand those concepts. Aside from that, the article is interesting because it discusses hacking bitcoin (or, more generally, a blockchain) and why more qubits are needed as a sort of error correction..
https://www.cnet.com/news/quantum-hackers-could-break-bitcoin-in-minutes-but-dont-panic-just-yet/

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