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I mean, you can drive a Bugatti Chiron 500km for the same amount of energy as a single bitcoin transaction. The cost of a single transaction using e.g. visa is utterly negligible in comparison.

Edit: Some truly depressing figures here [1] including this

> Number of U.S. households powered for 1 day by the electricity consumed for a single transaction: 16.54

[1] https://digiconomist.net/bitcoin-energy-consumption

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the author is making a point about the comparison to a transaction on a visa network. transaction on a visa network cannot happen without the rest of the traditional financial industry. I think the closest blockchain tech to a visa network will be lighting network, which is still WIP.

EDIT: Lightning Network potentially will be able to process much-much more transactions per second than visa network with the same usage of underlying bitcoin blockchain. Essentially Lighting Network allows you to create easily scalable and distributed version of visa network.

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