Should I share my theories?

I keep on coming up with different theories about physics and other things. I want to ask people what they think about it. I want to know if it is possible according to what they think about it but I don't want people stealing my ideas. Would it be best if I work alone and didn’t share it with anyone so they... show more I keep on coming up with different theories about physics and other things. I want to ask people what they think about it. I want to know if it is possible according to what they think about it but I don't want people stealing my ideas. Would it be best if I work alone and didn’t share it with anyone so they don’t steal my ideas? And If I did share my ideas should I do it in person and not on the internet?
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