Reddit, what's the most impressive display of intelligence you've ever witnessed in person?

I'm really good at math growing up and in high school I got really lazy at doing homework and would only do it on the bus it before class. My tenth grade geometry teacher didn't accept incomplete work and she always assigned a lot of work that I could never finish in the small amount of time I gave myself. Needless to say, I was falling the class but I got mostly B's on all the test. Mrs. Reynolds assigns the class a writing project(busy work) on how we can use math. I didn't really understand the assignment because I only use math when it's related to business transactions aka money. I copy and pasted some random formula and she threatened to turn me in but ended up giving me a 50% or else I would end up failing. Given my situation, I only had two chances to pass the class. I would have to make an A on the final or get an advance score on the LEAP state testing and my final grade would be a 100. I figured it would be easier to get an advance score than get a 100. I don't do anything special on tests days(study) but today was different. The day before, I did a nice workout, ate a healthy dinner, and slept well. In the morning I got breakfast and a starbucks coffee. I was mentally and physically prepared to kill this state test. Remember that everything lies on this test. Weeks pass by while I anticipate the test score but the day finally comes. I'm still groggy as I walk up to Mrs Reynolds to receive my score. The look of disappointment as I laid my eyes on the score chart. I got an advanced score but I was three questions away from a perfect score. Mrs. Reynolds says "good job" but I know she knows I cheated. I'm honestly a good quiet kid that does his work but I'm quite a jokester. There's no way for her to believe that a plagiarizing failing kid got the second best score in the class only losing to the valedictorian by a couple of points. So naturally she called me out on it. I assessed the situation on test day and knew out of all the students, she will be paying the most attention to me. I explained it to her and she admitted that I was right. She still wouldn't believe me. I explained that all of my old test scores were really decent. There was a pause and I asked her if she thought I cheated on those. "HA" I yelled, "People cheat off of me." The only reason I'm failing the class is because i couldn't turn in my incomplete assignments. I would have a B if otherwise would. I explained to her if she looked at records she would've been able to see for herself.

I hate it when people call me a liar. I told Mrs Reynolds to test me. I dont want any special treatment or privileges(turning in late incomplete homework). I told her to open our geometry workbook to any page and find the 3 hardest problem, show me the formula, and I'll do it with my eyes closed. It took her a lot of convincing but she obliged. I failed. I can't do the problems with my eyes closed. It's to hard for me. I asked to do it in my head with my eyes. First set of problem was an easy algebra problem. I noted to her that there were harder problems available and I would only do three. She said for me to continue. 5ish minutes later and I give her the answer. Slightly astonished she went for another. 5-8 minutes later I give her the answer. She still swears I'm cheating or that studied. The third question she gives me formula but withhold the value of b and tells me to find y. It took me awhile to figure that I need b to find y and I asked her for the value of b. She was testing me by withholding it. I should've been done but she wanted to squeeze in one more. I'm exhausted at this point but I obliged. She gave me a very hard question and one of the longest where I had to convert large fractions before starting on the formula itself. I'm almost done when my brain decided to give up. The teacher tells me I don't have to finish and I start pounding on my head to get the numbers to add up and I softly read the numbers out loud. It's the right answer. Astonished and lost for words, Mrs. Reynolds collapses on her chair. I'm mentally fatigued and note that my brain will not work for the rest of the day. The truth starts spilling out about my gift. I thought everyone was good at math like I was. I never studied for math, only had 12 minutes for homework in the most noisy environments, I would be able to math problems after learning it once and applying it, and how I used process of elimination on the state test to find the answer. Math tests are usually not multiple choice based and are more difficult. The state test was easy because the answers are right there and you'll be able to work it backwards to find the answer. The impressive part of it all is that i wasn't even prepared for this. I didn't shower, my hair is extra long, I'm wearing my glasses instead of contracts(helps me focus), and I didn't even eat breakfast that morning. I was able to do any math problem we learned in my head in unfavorable conditions.

Tldr: failing student in geometry does 4 difficult unplanned math problem set by the teacher in front of class without studying

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