This is an elaboration of the idea that where data comes from is just as important as what the data happens to be. In expert systems this is related to the log

This is an elaboration of the idea that where data comes from is just as important as what the data happens to be. In expert systems this is related to the logical justification of a truth statement, as the statement is still true or false, but there is a Pedigree or Provenance for the data provided as metadata about the data stored.