Certainly not just a philosophical concept, the observer effect is a real thing that will drive you crazy.
It's like, you know, when you're trying to observe something, and it's like, you're actually observing it, but it's not really observing itself, it's just reacting to your observation, and that's, like, super confusing.
Want to know more about the observer effect? Quantum Fluctuations might help clarify things.
Or, if you'd rather learn about the Observer Effect as a Philosophical Paradox, we've got that covered.
And if you're feeling particularly existential, you might enjoy our Quantum Existentialism page.
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