Turns out that blockchains are, in fact, not decentralized and are often running on outdated software:

A report commissioned by the Pentagon concluded that the blockchain is not decentralized, is vulnerable to attacks and is running outdated software. The report, “Are Blockchains Decentralized, Unintended Centralities in Distributed Ledgers”, uncovered that a subset of participants can “exert excessive and centralized control over the entire blockchain system.”

I am shocked. Shocked!

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