 My son, when he's looking at numbers and colors, he's experiencing these numbers and colors in a real-world environment, which means that when we're walking around, my wife will say, what color is that? That's a tree. That's a stop sign. He's seeing this stuff in the real world. He's not looking at a coloring book and then being like, what color is this? Oh, this is red. His connection to red is a square on a piece of manila paper.