So, recently I asked on the main Mathematics site about interesting subjects for my thesis. And it was closed as opinion-based. Btw this is my question: My question
Then, I tried to looking for similar question and I found this: interesting-first-order-odes-in-applied-science.
So what's the problem that made my question is closed? I mean, even if someone gives me an idea for my thesis, it doesn't mean my thesis 100% talking about his idea right? And it's not plagiarism. And it could be that I did not choose any of their suggestions. Again, so what's the problem? Is this kind of question really a bad idea to ask here?