Ask Lemmy
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You can see other people in a reflection without them being able to see you.
It is not possible to see someone else's eyes (except from the side, so it's only seeing their eyes in profile) in a reflection without them being able to see you too.
It's literally not possible via reflection, as everything is equal and opposite. If light can go from their eyes to yours, it's also possible to go the opposite direction.
This is what everyone has been saying but instead of thinking through everything clearly, you resorted to bullying.
The only way to accomplish this one-way vision is by adding something that is not reflection to the system (like a one-way window), but that's breaking the premise under which everyone else has been commenting in good faith.
Dude, calm down. It's just a discussion. Just give us an example of how I could see somebody's eyes in a mirror without them seeing my eyes and we'll all be amazed at how you were right all along.