Next time you prepare fried eggs take a look at the yolk. Does it have a strange red spot? It might look even frightening but no worries. This egg is absolutely safe to eat. I'm gonna explain why that red spot sometimes appears in the egg. Every item surrounding you at home, at school or at a local supermarket has some hidden purpose. The ridges on the coins you find on the floor, the digits on the eggs you buy, the holes on your AirPods, the pink rubber on your pencil. Let's explore hidden functions of common object we see or use every day.

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