In article ,
"Dr. O" dr.o@xxxxx wrote:

"Schrodinger333" wrote in message
...
That second rover looks like a real good investment now.

Unless the cause is a design fault in which case it will fail in about the
same time. That would be a horror scenario!

Indeed!

A NASA TV documentary I was watching a night or so ago showed the techs
replacing the main circuitboards on the rovers at KSC shortly before
Spirit's launch due to a serious technical hitch that had been belatedly
discovered. The commentator pointed out in passing one danger of doing
such a thing at the last minute: that it might inadvertently introduce
*another* fault which there had not been time to test for.

--
Stephen Souter

http://www.edfac.usyd.edu.au/staff/souters/