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In college I used to study a class ahead to be ready with questions. A professor said that something couldn't be done analytically, but I just hours before had learned the proof of the analytical solution so I told them it could be done, he said it couldn't, I said I can prove it. He gave me the chalk I went to the board and prove the analytical solution. He was like wow, I didn't knew that. He gave me extra credits on the final for that.
didn't knew that
Stay in school, kids.
This person is probably Brazilian given the domain of the instance they're in. Given that you didn't assume that they speak another language, I'll assume that means they know probably twice as many languages as you, and tenses are really hard to master.
Don't be a prick to people for no reason.
But that's what most people spend most of their time on the internet doing!
Their post history indicates a clinical obsession with... being an asshole about shit that doesn't matter.