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What's the dumbest thing you thought as an adult that you recently learned was wrong? (lemmy.world)

submitted 9 months ago* (last edited 9 months ago) by cheese_greater@lemmy.world to c/asklemmy@lemmy.world

191 comments fedilink hide all child comments

I just realized while cooking that a measuring-cup cup (as measured out as 250mL in a glass measuring cup) is the same amount(s) as one of the actual plastic baking measuring cups that go inside each other like Russian dolls lol

I thought they were different somehow (something something imperial metric yadda yadda yaddda)

Your turn to come clean Lemmings!

**EDIT: to clarify, I mean volumetrically for measuring liquids

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[–] bjoern_tantau@swg-empire.de 3 points 9 months ago

That link shows that Mario would see your eyes in the mirror. Those light rays work in both directions. If you can see Mario's eyes, Mario's eyes can see yours. This is clearly shown in that link.

People use mirrors to covertly look around corners because the mirrors they use are smaller than their head. And if the mirror is still spotted getting a bullet in the mirror is much less lethal than getting a bullet in the head. It has nothing to do with the mirror somehow being magically invisible to whoever is around the corner.