Sometimes I feel like telling people "don't think too loud, you're disconcentrating me", especially when a girl subtly looks at my ass when I'm doing something else.
But yes, as you say, a psychic picks up the feelings. Mere thoughts such as a number don't have any emotional charge.
That being said, if the person is saying the number out loud in his mind, someone who is clairaudiant may hear it. There are different kinds of psychics: those who see, those who hear, those who feel and those who simply know what is.
There was a lady who went for a cafe with a very powerful psychic and asked him about her wedding ring that disappeared. He told her exactly who took it, when, how, where he is currently, where he is and on which finger he wears it. Simply knowing "what is" is the most powerful type of vision and it is called "clear-knowing". In the case of that guy, they called it "clear-annoying" because they can't hide anything at all from him
Myth 4... Skeptics might say that if someone is really psychic that nothing bad could ever befall them because they would see it coming.
One day I went to the apartment of the Master Alchemist I was learning from and as we entered, I noticed he didn't lock his door in downtown Montreal when he wasn't home so I asked him about it. He said he used to drive a Porche in New-York and never locked his doors. He never got any problems.
One shaman I met in Peru claimed something similar. Although there is a lot of robbery, he often walks with a thousand dollars in his pocket and never ever got robbed.