Only one probe? Really?
I find it very hard to believe that while developing a project like this which would have cost trillions of dollars and taken years to prep for that not one person thought, "Huh, maybe we should send a second probe as a backup in case something happens to the first one." They travelled all that way to send a piece of equipment into an unknown environment and no one thought to send a spare? These are supposed to be smart people. That just felt like an excuse to put someone out on the surface.
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