“Of course the Eridian language has no words for colors. Why would it? I never thought of colors as a mysterious thing. But if you’ve never heard of them before, I guess they’re pretty weird. We have names for frequency ranges in the electromagnetic spectrum. Then again, my students all have eyes and they were still amazed when I told them “x-rays,” “microwaves,” “Wi-Fi,” and “purple” were all just wavelengths of light.”