On 10/1/2019 4:07 PM, AMuzi wrote:
On 10/1/2019 2:54 PM, Frank Krygowski wrote:
On 9/30/2019 8:52 PM, John B. wrote:
On Mon, 30 Sep 2019 06:00:24 -0700, Jeff Liebermann

wrote:

On Mon, 30 Sep 2019 13:26:05 +0700, John B.
wrote:

The problems with all the modern, marvelous, systems is,
"sometimes
they don't work".

True.Â* However, no system works 100% of the time in 100%
of all
possible (contrived) situations.Â* A bicycle that is quite
suitable for
riding on pavement would probably do badly in dirt, mud,
rain, etc.
One has to design for either a specific situation, or as
in this case,
the greatest number of reasonable situations, and rely on
the
intelligence of the operator to know when to disarm the
monster.Â* It
is impossible to design out clueless operators because we
continue to
produce better clueless operators.

As the driver who appeared sound asleep in his self driven
car
(recently highlighted here) demonstrates , "rely on the
intelligence of the operator" may not be the best path to
take.

In fact, as I think Frank will testify, industrial safety
is largely
concerned with eliminating "reliance on the intelligence
of the
operator" :-)

I think it's worse than that. Industrial safety nowadays has
to prevent deliberate suicide if it's at all possible to do
so. As in "He crawled under the barrier on his belly and
stood in front of the robot so it would stab him to death.
That's the company's fault."



With a mind like that you might consider a second career as plaintiff's
attorney.

Not me. I was more interested (although grudgingly) in how to design the
barriers to make that impossible.

BTW, the incident that inspired that post wasn't actually a suicide,
AFAIK. Instead it was a super-cocky young engineer who thought he knew
better than all the system designers.

And he didn't crawl under the barrier. Instead he lay down on his back
on a parts conveyor to get carried into the workcell without shutting it
down. Still, when he cleared the sensor problem that had stopped the
robot, it did go right through him.


--
- Frank Krygowski