Science was the accumulated knowledge of humans' understanding of the natural laws. Physics, math, chemistry, and so on would all find their own objective laws. Once everything was classified into the most basic molecules and atoms for each substance, science in my original world started its greatest developments of all.
But in the world of Eich, the elements were the basic unit of everything. All substances would be composed of the elements. Research and knowledge about elemental magic would be a constant of all civilizations and cultures as they developed. It was common sense in this world that magic existed.