Tacit Knowledge

And while "locked away in people's neural networks," tacit knowledge expresses itself in our actions, our responses, and our expressions.
- There are two different types of knowledge, two different sets of skills. The first, a public knowledge, is based on symbols, codes and rules. The second, a private knowledge, is based on concepts, skills and procedures.
Polanyi writes, "when I receive Information by reading a letter and when I ponder the message of the letter I am subsidiarily aware not only of its text, but also of all the past occasions by which I have come to understand the words of the text, and the whole range of this subsidiary awareness is presented focally in terms of the message. This message or meaning on which attention is now focused is not something tangible; it is the conception evoked by the text." The text says one thing, but when we read, we think of (and learn about) whatever is (in ourselves) evoked by the text.