Haha it was actually the DM21 video posted in this thread. Luckily it was the 2nd video I started listening to.   "We will make sure no information is ever lost, so if you build something there will be snapshots that will happen all the time. To save whatever you are building, the state of your construct. Its a bit like blueprints but the difference is that a blueprint is something you can sell on the market. That you can use in a factory to make several copies of your stuffs. So a blueprint i