Worlds Adrift is a survival and crafting game. You craft things by finding resources in your world and scavenging them. But there are some other things you’ll need in order to make most parts. Knowledge is the first requirement. Knowledge is gained by finding things in the world and scanning them with your Scan Tool. By doing this, you’ll receive a certain amount of knowledge depending on the item. By gaining knowledge, you’ll be able to keep that knowledge and use it towards unlocking objects such as engines, and wings, that you can use to build ships. And yes, you need both resources and knowledge to be able to craft an object.