What if your bug crashes the Mars rover?

In “This Developer’s Life” podcast “1.0.3 Problems” mentioned on Scott Hanselman’s blog

Regarding the “1.0.3 Problems” comments about how bad it would be to have written “the bug” that trashed a Mars rover:  I don’t think we have to speculate too much about hypothetical situations.  We have the Hubble telescope mirror, for instance:

http://en.wikipedia.org/wiki/Hubble_Space_Telescope#Flawed_mirror

and the Mars orbiter thing too:

http://en.wikipedia.org/wiki/Mars_Climate_Orbiter#Encounter_with_Mars

“Bummer, dude” is one possible response.