If someone tells you that your line of research is uninteresting, just do the research anyway.
If someone tells you that your line of research is uninteresting, just do the research anyway.
If they tell you it's not possible, it's 50/50.
Adapted from:
Clarke's first law: When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.
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I don't think you need to be elderly - just set in your ways.
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A valuable conversation would be why they think it wouldn't work. That will give you a lot of surface area to mine for clues to make it work.
My graduate advisor said that to me and put me on some other stuff he wanted to work on. It really took the wind out of my sails, and I never really had the passion for the new work that I did for my original idea.
My final year he got a new PhD student and let her work on the idea. She was quite successful in that area. He never said anything to me about it.
TLDR if you have an idea you're passionate about it, ignore the haters and just do it. Even if it doesn't succeed, you'll have the satisfaction of knowing you pursued something YOU found interesting.