Tendency for Change when Using OO Paradigm (Jacobson et al. 1995) Characteristic of software product/project Probability for change Objects derived from the application Long -lived information structures LOw Passive object's attribute Medium Sequences of behavior Medium Interface with the outside world H 1gh Functionality HighTendency for Change when Using OO Paradigm (Jacobson et al. 1995) Characteristic of software product/project Probability for change Objects derived from the application Low Long-lived information structures Low Passive object’s attribute Medium Sequences of behavior Medium Interface with the outside world High Functionality High