Peter nodded. “So you have been paying attention. X and Y and Z, along with time, are sufficient for billiard balls and booster rockets—simple things. But real life, the complexity of it, demands more. This was our discovery: the world, like a sponge, will soak up as many dimensions as you provide.” Peter plucked at his shirt, one of the blousy button-downs he favored. “Size, color, material … these are all dimensions, and they establish a space that can be navigated and explored. Just as we can move up or down, side to side, we can also move along the axis of … softer, or scratchier. More
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