* There's still a notion of production. Most people work on dev environments just like today. You do need the ability to merge code in some reliable form from one environment to another. The Clerk project mentioned in the talk does this.
* Dev environments are more fluid. You can debug issues faster because you spend less time getting to arcane parts of your program after every restart.
* It is possible to live-edit production for important incidents. It's very much a weapon of last resort, you have to be super careful, and you probably want to rehearse in staging the way NASA does with their rovers. But it has the promise to reduce the amount of time your customers are impacted in major incidents.
* There's still a notion of production. Most people work on dev environments just like today. You do need the ability to merge code in some reliable form from one environment to another. The Clerk project mentioned in the talk does this.
* Dev environments are more fluid. You can debug issues faster because you spend less time getting to arcane parts of your program after every restart.
* It is possible to live-edit production for important incidents. It's very much a weapon of last resort, you have to be super careful, and you probably want to rehearse in staging the way NASA does with their rovers. But it has the promise to reduce the amount of time your customers are impacted in major incidents.
This talk inspired me to go build a live programming environment in my current stack of choice: https://spectra.video/w/wkDB5fsjBNBbsqKXGhGzwT