Any supervisor worth his salt would rather deal with people who attempt too much than with those who try too little.
I sit here very respectfully to listen to you. If what you want to do is put on a show and giggle every time I talk, well then I have no interest in answering your question. So if you'd like to conduct a respectful conversation, I'm happy to do it. If you don't, sit down and I'll answer the next question. What's your choice?
I made a conscious decision not to tell anyone in my life. Now I tell people - don't tell anyone your idea until you have invested enough of yourself in it that you are not going to turn back. When a person has an idea at that conception moment it is the most vulnerable - one negative comment could knock you off course.