[SystemSafety] Notions of Risk

[Peter Bernard Ladkin]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

There is some move to consider safety and security together in engineered systems and as a result
I have come across - again - various informal notions of risk. I thought it worth while to perform
a quick (but incomplete) survey of current standards and to try to elucidate the components
currently thought to go together to constitute risk.
http://www.abnormaldistribution.org/2016/01/12/risk/

In a nutshell, the project-management idea of risk as the chance that things will go badly wrong
is on the way out (it's been replaced in ISO/IEC Guide 73). That's something to applaud, in my
view. But there are often things wrong with the probability/likelihood component of our favored
notion, and visible suggestions it be generalised into something like a measure of uncertainty.

PBL

Prof. Peter Bernard Ladkin, Faculty of Technology, University of Bielefeld, 33594 Bielefeld, Germany
Je suis Charlie
Tel+msg +49 (0)521 880 7319  www.rvs.uni-bielefeld.de




-----BEGIN PGP SIGNATURE-----

iQEcBAEBCAAGBQJWleqzAAoJEIZIHiXiz9k+S7gH/3qjILBY7LWme6YIHNxy01Rl
nJ8N3K6Y1tUiSJp7coMpxU5xFnw528cASwoJ6zC373MYF9yF5CtaXflgqnSQZmq1
5gWlcDWf4eXhxzwg/8qya72ZVArRhBnDTL6Q3FsBJ8IGYqvgoiDL7QMHLFs9EWz+
HscApkjGsmqC+MY954p9OByEMYVD8t9On/gb7llSN6B78n7oCBkSrrFgJ7IamwIQ
UWgrgBUE+MHhsyz33qwMNQF6HkE9xJepfBc1Q++IuM3n68TTuunBTSuay90ZiPZ+
eHpfVN3pJLKuoH3TMNWU7aJIWxEdkOmV3InTHLoprPR9J03FUMg3E6oBMpVNVV8=
=Kkcc
-----END PGP SIGNATURE-----