[rescue] Re: [geeks] Crap! Not again...

[ed at the7thbeer.com]

My understanding was a majority-wins system of 5 computers.  Each
calculates, if one is wrong, it goes away.  The process continues until
either only one or two are left running.  Doesn't mean they can't all come
to a "right" answer that leads to a problem down the road.

> Also, they are programmed by different teams, because a software bug
> would invalidate the redundancy in many cases.

I thought NASA's concern was hardware redundancy w.r.t. failures due to
exposure to cosmic radiation.

>
> Also, the "Hacker Terrorist" (were it intentional) woul dhave to pass a
> security clearance check - a non-trivial effort, I assume.

And how does that help weed out the individual with a security clearance
who later has a change of heart, i.e. Robert Hansen?