[shpeedy]

Field is mathematical abstraction, used in mathematical model, to represent a physical thing.

Physical things are real. Mathematical abstractions are not. OpenGL is not real too, but it looks very real and accurately predicts reality. In OpenGL, field is array, e.g. "float[][][] field;".

[Koshkin]

That’s like saying, “Cat is a word used in a language to represent a physical thing.”

[shpeedy]

No, it's like saying that nature is built on kind of vertex buffer, because OpenGL accurately predicts reality.