Science is a great tool to improve greatly our understanding about how the world works, but it's not necessary to know SOME facts. Stone age people were smart,

Science is a great tool to improve greatly our understanding about how the world works, but it's not necessary to know SOME facts. Stone age people were smart, and they knew that things go down, some materials are harder than others and a pointing object hurts. Engineering is the process of using that to build a construction like Newgrange or a spear to hunt. Making use of your understanding of the world to take advantage of the medium. Science just allows you to greatly increase the understanding of the world, in a more precise manner and at a faster pace. You learn properties of rocks (science) that can be used to infer newer materials, lighter and more resistant than others (engineering), or to predict with more precision star movements (science) and allow you better navigation through sea (engineering).