A reference to having acquired facts about matters that is only available to a certain individual and which is very difficult to share with other people: The scientist's tacit knowledge was difficult to share with his friends, even when he wrote it out or was trying to verbally explain what kind of research he was working on.

Gabrielle has tacit knowledge about data that is understood only by her; so, it is too much trouble for her to attempt to communicate such information to other people with words or symbols.