Here, the properties of velocity, color, mass and spin are represented as visual elements. 쿼크나 중성미자처럼 작거나 빠른 것을 본 사람은 아무도 없으며 앞으로도 볼 수 없을 것이라고 앤더슨은 말합니다. One could argue that they could look like anything, if they have looks at all.