We see the world around us in wonderful colors. But are these colors still there when no one is looking? Are colors properties of things, and therefore part of them? Is the rose’s blossom red—or does it just appear that way to us, without the color being part of the petals?

Is the moon there when no one is looking?

What may seem like a theoretical question with little relevance to our everyday lives—and, especially in relation to the question about the moon, may even seem slightly ridiculous—is actually a question with brutal consequences for our understanding of reality, if we follow the question to the depths of its real meaning and descend down the rabbit hole

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