Zen Buddhism - Beginners Mind

You say that if you know everything already, you can't learn anything. Can you talk about a shoshin? I think that's the correct pronunciationth zen buddhist. That's rin buddhism. That means beginners mind. And this is one of my favorite stories that the martial artist brusquely told,. A story about aa professor who's studying consciousness and wants to understand zin buddhist. The metaphor there is, if you already know everything, then you don't have room for it any more. So what do i need to unlearn and pour out of my cup so i can fit in? Try on some other belief that's going