Scalability is this idea of coming up with a blockchain that can scale much larger than existing chains essentially by processing transactions in parallel. And moving away from this paradigm where every single node on the network has to process every single transaction.

Whereas most technologies tend to automate workers on the periphery doing menial tasks, blockchains automate away the center. Instead of putting the taxi driver out of a job, blockchain puts Uber out of a job and lets the taxi drivers work with the customer directly.

Initially, I thought that Ethereum was a thing that would be used for people to write simple financial scripts. As it turns out, people are writing stuff like Augur on top of it.

Vitalik Buterin Quotes