Further off-topic: My college robotics professor used to go on and on about how incredible it was that the Mars rovers had lasted twice as long as in the spec.

Further off-topic: My college robotics professor used to go on and on about how incredible it was that the Mars rovers had lasted twice as long as in the spec. He was from Glasgow and had a really thick Scottish accent, and he was obsessed with Daryl Hannah's character in Blade Runner. He used to say "Noow tha' theer... tha's a sexxeh rrowb't." At some point, he decided that Spirit and Opportunity were "sexxeh" as well.