vault backup: 2025-12-08 16:37:36

This commit is contained in:
2025-12-08 16:37:36 -05:00
parent cb49b3b7b6
commit 17f84d150c
43 changed files with 1168 additions and 266 deletions
+29 -6
View File
@@ -1,19 +1,26 @@
---
id: the-failure-of-risk-management
aliases: []
title: _The Failure of Risk Management_
tags:
- authorship/original
- destiny/permanent
- status/complete
- topic/risk
- type/media-commentary
title: _The Failure of Risk Management_
---
# _The Failure of Risk Management_
The Failure of Risk Management
(Why It's Broken and How to Fix It)
by Douglas W. Hubbard
This is the commentary companion to [[hubbard_2020_failure]].
_The Failure of Risk Management_ (abbreviated here as tFoRM)
tFoRM is has two chief concerns:
* introducing actuarial methods to industries other than insurance.
* discrediting arguments against the use of actuarial methods
in industries other than insurance.
## Mentioned Topics and Abbreviations
@@ -22,7 +29,7 @@ by Douglas W. Hubbard
* Actuarial Science
* Options Theory (OT)
* Modern Portfolio Theory (MPT)
* Probabalistic Risk Analysis (PRA)
* Probabilistic Risk Analysis (PRA)
* Value at Risk (VaR)
* Loss-Exceedance Curve (LEC)
* Risk Tolerance
@@ -39,6 +46,7 @@ but not referred to as such.
As it is most commonly understood,
risk _always_ implies a negative impact.
Analyses that suggest otherwise are unhelpful.
For boolean cases,
risk can be represented as a vector of **probability** and **loss**.
@@ -112,7 +120,7 @@ where $Pr$ is the probability of Payoff.
Expert opinion is valuable, but its weaknesses must be compensated for.
<!-- TODO: -->
%% TODO: %%
Experts tend to be good at creating heuristics,
but do not apply them consistently in practice.
@@ -251,3 +259,18 @@ Hubbard's dismissal rubs me wrong
because it reads exactly as he describes the
"at least we're doing _something_" argument
throughout the book and just pages earlier.
## _Loss Models_
[[hubbard_2020_failure]] is obviously inspired in some part
by [[klugman-et-al_2019_loss-models]] and its prior editions,
which is strange because neither the text nor Klugman
are mentioned in the text.
The opening line of _Loss Models_,
> [!quote] [[klugman-et-al_2019_loss-models#1.1.1 The Modeling Process]] (emphasis added)
> The model-based approach should be considered
> _in the context of the objectives of any given problem._
is just [[#_Exsupero Ursus_]].