when i was little i always wondered why hot food would get cold if you left it out too long, and cold food would get hot. when i was about 12 i realized it was food turning to room temperature.
science
1,002 beliefs in this area

People said that the earth spinned but I never felt this "spin". I then swiftly came to the conclusion that the only way to feel the earth move was to spin around in circles and that your dizzyness was actually the enlightenment of feeling the earth move.
My science teacher told me I was wise for my age.
I grew up in a household that was rather behind-the-times, technologically. When I was in 7th grade (1995-96), the only computer we owned was a hopelessly obsolete old MacIntosh.
So one day in Social Studies class, the teacher asked, "Do any of you know who the richest person in the world is?"
A boy answered, "Bill Gates. He's got, like, fifty billion dollars."
"And who is Bill Gates?"
"The guy who invented Windows."
The guy who invented windows. My first thought was, "Wow! No wonder he's so rich-- I've never seen a house without windows."
My second (slightly more intelligent) thought was, "Wait... The guy who invented windows is still alive? How OLD must he be?!"
I forget how long it took me to realize they were talking about the operating system. I'm glad I didn't say anything out loud-- otherwise they never would've let me move up to 8th grade.
I used to believe that American water was chemically different to our water; because while water in Britain boils at 100 degrees and freezes at 0 degrees, in America it boils at 212 degrees and freezes at 32 degrees.
i used to think that the earth spun so fast you couldnt feel it (and it also kept us down with gravity) and if you got headaches it was because you were starting to feel it a little. and i also thought that we were inside a globe, like a snowglobe.
I used to believe that batteries in an appliance (like my old sony walkman) would 'spin' when the item was used.
I spent many hours quickly opening the battery compartment trying to see the batteries turning, but obviously didnt succeed!!
Early in my becoming acquainted with science, I thought the density of all elements would be proportional to their atomic weights, regardless of whether they were solids, liquids, or gases. I "figured out" some amazing things based on that. For one thing I wanted to do a demonstration that I never got to do because of the difficulty of obtaining the heavy gas xenon. I thought that if only I could get some xenon and fill a beaker with it, I could do an amazing demonstration. For one thing I thought the xenon would be so heavy that it would stay in the beaker without dispersing into the atmosphere for quite some time. Then I thought I'd place a piece of iron on top of the xenon in the beaker and see the iron float on the xenon. Since xenon has a considerably higher atomic weight than iron, I assumed that even gasseous xenon would be denser than solid iron, resulting in that floating of the iron that I expected. When I later learned about the behaviour of gasses, I realized that gasseous xenon, for all its large atomic weight is much less dense than most any solid, including iron, so likely no solid would float on it. And even a heavy gas would disperse into the atmosphere quickly, so the xenon wouldn't likely stay in the beaker long enough for me to even try the demonstration.
Another amazing "fact" I deduced on the same basis came after I first heard of osteoporosis, and how it is a disease causing loss of bone density. I knew that bones have a lot of calcium, an element of considerably larger atomic weight than nitrogen and oxygen that make up most of the atmosphere. But human flesh, I learned, is composed primarily of hydrogen, carbon, nitrogen, and oxygen. Since hydrogen and carbon have lower atomic weights than the latter two that also make up air (99% or air, anyway), I deduced that human flesh must be lighter than air, so that our heavier bones were what holds us down. So I thought that the main risk of osteoporosis sufferers was that their bones could become so depleted of calcium that their bodies' overall density would be less than that of air, and they could go floating away to the top of the atmosphere!
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This goes for my friend
He thought when online ordering first came out. The item would just pop out of the computer screen!
I used to think that my computer had a mind of its own. Whenever i ever was in a bad mood, my computer would strangeley enough run faster and download stuff faster, as if it were comforting me. Whenever i pushed my computer to much, it ould get angry and run slower and make me do worse in video games.
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I used to believe that Electricity was chiped overseas in large thick rubber boxes on ships.
I used to believe that the frying pan and metal stuff were never hot unless they glowed red. That changed the day I decided to test it out when Mom wasn't looking. I cried for an hour I think.
One day at my grandma's house I was looking at a book that I wanted on Amazon.com. My cool grandmother came in, and, without question, bought the book for me and my little brother. i knew it would be a few days before we got it in the mail, but my brother sat anxiously in front of the printer, asking where it would come out.
When I was little, my grandma had a printer that made a whirring sound as it printed the paper. It sounded like a little voice saying, "Help me, help me, help me!" MY printer, on the other hand, had a cute little voice that said, "f*** you, f*** you, f*** you..."
i used to believe that I could not make a camera self- potrait since I would have to stare in the lens & pose ( with a smile) at the same time! (impossible!!!!!)
I used to think that when they invented phone numers, the first person to ever have a phone number had 1. Then the second person had 2. And then another preson had 3. Then they just added 1 to every phone number in the world. I started wondering if somebody already got a million for a phone number.
My phone number is 306-8842. I thought that 306-8841 people got a phone number before us.
When I was little, before call waiting, I didn't understand how the busy signal on the phone worked. When I heard the busy signal, instead of hanging up, I would wait for several minutes, thinking that when the line was free again, my call would go through. This went on for a long time until my mom noticed and explained it to me.
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I thought the universe was really a grid where every cell can have either the value zero or one.
I also used to think mind and work were extra dimensions
I used to think that gravity could power anything and that you could evn make a perpetual motion machine, but I knew you couldn't make a perpetual motion machine, so I could not understand it
I never saw anyone use the numbers on a telephone, so I didn't know why it had numbers. I thought that the numbers were some sort of advanced feature that nobody ever used.
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I used to think that I could put a audio tape into the VCR (even though the audio tape is too small) and it will still work. I once tried it and it broke.