subconscious mind

Remember when you were in a place where there were several conversations going on at once? Like in a supermarket or somewhere else. They might have sounded like a mass of background noise, right? However, suppose there was someone in one of those conversations mentioned your name, remember having focused on that particular person? How did you know someone said your name?

I just read from an article, "Your subconscious mind is listening to every conversation at the same time."

Woah! Amazing isn't it? That is perhaps a reason why you can sometimes just know something. Your subconscious mind has absorbed it without you consciously being aware :)