They don’t care if you look at them. That’s just PopSci mumbo jumbo.
The double slit experiment is about **measuring** and the fact that you can’t measure tiny tiny particles without affecting them.
Think about it like this. You are blind and want to check if there’s a ball on the table in front of you. You can reach out your hand to touch it, but no matter how slightly you touch it you will always slightly move it. That’s what’s happening in this experiment.
There’s just no way to measure which slit a particle went through without interacting with it, and this interaction will cause a different result.
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