Welcome back to Four Letters Long, I am Ciara Nolan. Here is a thing I have had to say gently many times. Yes, two brown-eyed parents can have a blue-eyed child, and no, that does not mean what you fear it means. The neat grid from school, brown beats blue, was a teaching tool that outlived its usefulness. Eye colour runs on at least sixteen genes and a pigment dial that turns rather than flips. Today I will walk you through the real version, and then show you why this matters far beyond eyes, because the same single-gene thinking muddles how families understand inherited illness. A genetic counsellor joins me to talk about what people hear when she says the word recessive. You are listening on Witspeak Podcasts. Look into my eyes, so to speak.