Sabine Hossenfelder on Imaginary Numbers: Are They Real?

The number 'i', the square root of -1. We're all taught in school that it's "imaginary." But if these numbers aren't real, why are they absolutely essential for describing reality, from electrical engineering to the fundamentals of quantum mechanics?

In this video, we dive into the beautiful and bizarre world of complex numbers. Are they just a clever mathematical trick, or do they represent a deeper, hidden reality? We'll explore this philosophical debate, guided by the clear-headed, pragmatic approach of physicists like Sabine Hossenfelder, who often reminds us to be careful about mistaking our mathematical descriptions for reality itself.

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