**Description** If some information about a “black box” system is not directly available, can you “reverse engineer” those missing parameters? **Examples** - How can we use data from CAT scans to estimate the location of a tumour? - Can we determine the damping of an oscillator from the decay of its time series data? (reference [[@witelskiMethodsMathematicalModelling2015]]) See [[SQM Classification of Mathematical Models]].