How much of the budget overruns are actually due to the construction and execution of the space probe, and not due to financial and bureaucratic mismanagement?
Further understanding of gravity-be it through the Gravity Probe or the LIGO projects-is crucial if we are to properly understand the relationships between the fundamental forces, and there is still much we have to learn.
I have been looking forward to this mission for years. There is so much it can tell us. I will post more tonight!