Ethereum is a global singleton state machine, and transactions are what make that state machine “tick,” changing its state. Contracts don’t run on their own. Ethereum doesn’t run autonomously. Everything starts with a transaction.
Ethereum is the first step in the decentralized computer industry. It is the internet when there was only 1 website and kb of data flow. Imagine if a blockchain could run code from any programming language on a VM, python, c++, go, js, with api calls, db operations, clocks, a sync. It would change the world.
