What is @Ethereum - and how does @arbitrum help?

Imagine a computer anyone in the world can use - and trust - to run anything where real money is on the line. That’s Ethereum.

But as @sgoldfed from @OffchainLabs puts it, Ethereum was a powerful idea running on a tiny machine: one with the computing power of a laptop.

If you want to power all the world’s transactions, you need something bigger.

That’s what Arbitrum is building: a scalable, trustworthy version of that global computer