Ethereum’s groundbreaking innovation is to combine the general-purpose computing architecture of a stored-program computer with a decentralized blockchain, thereby creating a distributed single-state (singleton) world computer. Ethereum programs run “everywhere,” yet produce a common state that is secured by the rules of consensus.
Imagine Ethereum like a global compuer desktop that anyone can access at any time and read all the files, pictures, etc. on it. However, it costs money to move the mouse, create a new file, or double click a file and run it.
