"They want the period of a day or two to assess the effect of the first missile ... to probably getan orbit or two, togetanunderstanding of what effect the first intercept had on the satellite before launching another interceptor, " Ham said.
"The big difference with computational fluid dynamics (CFD) compared to wind tunnels is that you not only get results, but also anunderstanding of what goes on, " said team boss Mario Theissen.
And no doubt one of the topics that President Sarkozy and President Obama will spend a lot of time on today is exactly what those sanctions look like moving forward, understanding that sanctions are part of an effort toget Iran to change their behavior.
My contact and his fellow directors flew back and forth between China and the UK in an effort to turn things around, but could not get a clear understanding of what was going wrong.
Once young salmon getto the ocean, scientists have only a vague idea where they go, and an incomplete understanding of why some years they thrive and some years they starve.