You can study and get any certificates. But you cannot get your death certificate
You can become an engineer if you study in engineering college. But you cannot become a president if you study in Presidency College
You can expect a BUS from a BUS stop ... But you cannot expect a FULL from FULL stop
A mechanical engineer can become a mechanic but a software engineer cannot become a soft
You can find tea in a teacup. But you cannot find world in the world cup
You can find keys in Keyboard but you cannot find mother in the motherboard
Lastly, can the great abdominal surgeon perform same surgery to his/her abdomen??!!!