If you would let a clerk update it, then it is 'data'.
If you let experts update it, then it is 'knowledge'.

Stammt von Wiederhold, G.:
Knowledge versus data
in: On knowledge base management systems, Springer, 1985

There is no substitute for thinking

Every good journey begins with a map

change your environment frequently and feed your brain

Alle aus Andrew Hunt: Pragmatic Thinking and Learning.