Every morning I force myself out of bed, drag my sleepy body to the bathroom and look at the mirror. Who is that human female with messy hair and sleepy eyes? And every morning, no matter how dishevelled I look, it is painfully obvious to me that, yep, I will have to wash her, and comb her – because that woman in the mirror is my own reflection. What seems like a normal morning routine happening in millions of bathrooms around the world is actually an amazing skill: Between the age of 15 and 24 months, human children start to realise that a mirror image is a reflection of themselves and not a second child behind glass. Even more astonishing, humans use mirrors as a tool to manipulate their appearance!