Brother doont come up with Compuer simulation ....................as if we test potentiometer it brings result far away from the practical one ........you are talking of Explosion are you nut ........ In 1998 test we have weapon of only 43 KT and china has 4-5 MT weapon 100 tmes more than us .................... so we need tests to ensure security against china...... doing test is not to show drama on International stage ..........its to decide condition of explosion or to findout error