Tacit knowledge

Tacit knowledge is like a secret kind of knowledge. It's something you know, but you don't really know how you know it. It's kind of like when you know the right thing to do in a certain situation without really being able to explain why. It can be things like street smarts, or body language, or how to do a certain skill without understanding why it works. It's usually something that you've learned from other people or from experience.