 Additional Blockades on WCML
On May 12, 10:21 pm, Chris Tolley <cj...@supanet.com> wrote:
> Yes, but even apparently "human-free" safety devices are still subject
> to manufacture, installation and inspection by human beings. Errors can
> be made in any of those processes. One can only minimise the human
> element - it cannot be eradicated.
But you can throw arbitrary resources at them: you're only doing them
once. Installing relays correctly once a decade is a very different
position to performing manual operations correctly three times an hour
for a decade.
You can run two distinct systems, installed by different people.
Hell, you can have them _designed_ by different people, and you can
run three, or five, to avoid livelocks between two co-operating
systems. Read Feynmann on the Shuttle software processes, or read up
on ETOPS rules on performing work on both sides of the plane at once.
ian
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