Listened to Compiled Conversations #17 with Shawn McCool. Refreshingly technical discussion on Event Sourcing and related patterns. Both guys have solid knowledge and understanding and cover a lot of ground.
I've used many metaphors to explain Event Sourcing, but the chess metaphor stuck with me: storing the current board state versus storing every move. Naturally, with Event Sourcing, the moves allow you to rebuild the board at any point because the events (moves, with this metaphor) are your source of truth.
This is a timely listen for me. My next Metaphorically Speaking video covers this exact topic. More metaphors incoming!