From: Zack Mansdorf <mansdorfz**At_Symbol_Here**BELLSOUTH.NET>
Subject: Re: [DCHAS-L] Validity of the risk matrix
Date: Thu, 17 Oct 2019 11:34:46 -0400
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 00db01d58500$69061c40$3b1254c0$**At_Symbol_Here**bellsouth.net
In-Reply-To


The link worked for me without a log in.

 

It is all about cyber security and the use of a 3X3 risk matrix.

 

The author supports Bayesian Statistics instead of the risk matrix.

 

This is an exercise in sophistry.  There are two basic types of risk assessment.  Qualitative and Quantitative.  The best guess estimates are done using qualitative estimates while definitive risk assessment are done using the later (where the data are available).

 

The author suggest the “shaggy guesstimates” are just as described.  Like medicine, my 40 years of experience has given me some element of skills at anticipation and use of a 6X6 or 20X20 risk matrix works for me.  Further, loss of life always outweighs inconvenience.  Most companies spend significant amounts of money for fire protection but this is a low probability event.  He might suggest this is a waste of time.

 

Consider this a medium risk response

 

Zack

S.Z. Mansdorf, PhD, CIH, CSP, QEP

Consultant in EHS and Sustainability

7184 Via Palomar

Boca Raton, FL  33433

561-212-7288

 

 

 

 

 

From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of David C. Finster
Sent: Thursday, October 17, 2019 11:04 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] Validity of the risk matrix

 

When I click on the link I supplied, I, too, get the log in request.  ??  When I search on Google for “why the risk matrix must die” I get direct access to the article.  ??

 

Dave

 

From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of Peter Zavon
Sent: Thursday, October 17, 2019 10:48 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] Validity of the risk matrix

 

This requires a log-in to view.  I am not particularly enamored of referral links that require that, and I am certainly not going to use Facebook or Google account information to log in to any other site.

 

 

Peter Zavon
Penfield, NY

PZAVON**At_Symbol_Here**Rochester.rr.com

 

 

From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU] On Behalf Of David C. Finster
Sent: Thursday, October 17, 2019 9:59 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: [DCHAS-L] Validity of the risk matrix

 

While stumbling around the web with regard to thinking about the risk matrix, I came upon an article that questioned its value:

 

https://medium.com/**At_Symbol_Here**JornMineur/why-the-risk-matrix-must-die-620a7287e7c

 

The essence of the argument, I think, is that estimates of probability are very unreliable.   I’d appreciate the wisdom of the list regarding this essay and its conclusion.

 

Dave

 

David C. Finster
Professor Emeritus, Department of Chemistry
Wittenberg University

 

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

Previous post   |  Top of Page   |   Next post



The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to secretary@dchas.org.
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.