Your brief but resourceful and sharp lecture was very helpful to get an `` out of box '' idea about what we were learning during last few weeks I am sure that Noun/Verb Analysis , CRC Modeling , OO Principles-SOLID theories that you taught us on that day , will make our lives easier when developing a new program . But as we are learning OOP concepts by JAVA , it would be more effective if you had explained Polymorphism from JAVA instead of C++ Thank you sir very much for spending your valuable time for us .