On 23/07/2020 12:47, AnthonyL wrote:
On Tue, 21 Jul 2020 13:56:57 +0100, The Natural Philosopher
wrote:

On 21/07/2020 12:49, AnthonyL wrote:
On Mon, 20 Jul 2020 17:27:28 +0100, The Natural Philosopher
wrote:



It somewhat reminds me of what I learnt as an engineer "Safety factor
is simply ignorance factor".

Sounds ******** to me. Safety factor is the margin to known problems.
Says nothing about unknown problems, but how could it?


https://en.wikipedia.org/wiki/Factor_of_safety
or more precisely the "Margin of safety"

That has nothing to do with unknown problems and has everything to do
with the uncertainty of the anticipated behaviour of the materials in
question.

Ignorance === unknown.

I didnt start the use of that term, I merely replied that 'ignorance
factor' implied 'margin for unknownn (problems)

Albeit a long time ago I also spent a lot of time calculating (before
ready access to calculators) Mean Time Before Failure and Operational
Reliability of sub-systems in an engine.

No doubt any safety factor applied nowadays would be much more refined
than in those days as the manufacturing and build processes improved
and the ignorance factor decreased.

What 'ignorance factor'?

You have categorically stated that this has nothing top do with unknown
problems, therefore there is no 'ignorance factor



--
In todays liberal progressive conflict-free education system, everyone
gets full Marx.