I agree maz, and it’s also a great way to interactively understand pretty well any code you’re working on - it’s almost a bio-feedback developer experience…

BTW, if anyone is wondering how to enable viewing of payload to the browser (I know someone asked previously, and it featured pretty heavily in the video), it isn’t yet documented but there’s an option in the LiveSocket constructor in app.js. By default it looks like this:
let liveSocket = new LiveSocket("/live")
but if you update that line to:
let liveSocket = new LiveSocket("/live", {viewLogger: debug})
the browser console will get all the debug messages…

EDIT: It’s probably obvious to those of you who live and breathe JS, but I avoid it like the plague… you need to ensure you import the debug function in order to attach it:
import {LiveSocket, debug} from "phoenix_live_view"

I think LiveView is probably one of most visual ways to teach Elixir beginners about GenServer.

Great talk, the demos ran so nice on a conference room wifi, but what I was really surprised was to see how smooth it is to test live views! Rich interaction testing with no browser needed is such a privilege.