vault backup: 2025-12-13 17:58:54

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---
id:
aliases: []
title: "2025-12-13"
tags:
- authorship/original
- destiny/permanent
- status/draft
- type/daily
---
# 2025-12-13
## 2025-12-13 08:45
I am interested in [[actuarial-science]] and [[risk-management]]
for their ability to quantify what is generally viewed subjective,
and as frameworks for general decision-making.
The idea that one could devote significant thought
into making a decision aligned with their [[personal-values]]
and fail to pick the best option to that end is intriguing to me,
more so that an accurate quantization of ones values
and that the appropriate framework could trivialize all such decisions.
Personal decision-making is often described
like calculating the result of a formula with hundreds of terms by hand.
People mess it up for the reasons you would expect for such a problem,
but then today you wouldn't expect them to do it by hand.
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@@ -20,7 +20,7 @@ see [[professionalism]].
Individuals differ in **learning rate** and **capacity for familiarity**.
Whether nature or nurture is to blame,
there is little an adult can do to move those needles.
Making the most of the resources you have
Making the most of the resources one has
requires developing effective coping mechanisms
(like [[note-taking]]).
@@ -34,7 +34,14 @@ There is a practical limit to the mind's "shelf space".
It's not only a question of experience or exposure,
familiarity requires maintenance.
As of 2025-11-05 the original content of [[this-notebook]]
would take almost two hours to read,
and though I try to make it otherwise,
it likely doesn't contain an eighth of my professional knowledge.
> [!example]
> As of 2025-11-05 the original content of [[this-notebook]]
> would take almost two hours to read,
> and though I try to make it otherwise,
> it likely doesn't contain an eighth of my professional knowledge.
%%
## TALK
%%
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---
id:
aliases: []
title: Personal Values
tags: []
---
# Personal Values
Personal values are subjective preferences for behavior
that affect one's decisions in ways that an objective analysis could not predict.
> [!example]
> People are more likely to return a wallet
> with more cash than less.
Personal values are the difference between one's normative and descriptive [[utility]].
Maintaining strong personal values aids decision-making
by allowing one to trivialize problems
that may be overwhelmingly complex when analyzed objectively.
For example:
For an unbiased individual,
to calculate the utility of a second bowl of ice cream---
to determine its relative benefit compared to its harm---
requires a thorough understanding and accurate quantization of their
* recent and future physical activity
* fitness goals
* preference for ice cream relative to other desert options
* natural tendency to form unhealthy habits
among many others.
For an individual who strongly values their health and physical fitness,
the knowledge that they would be acting in violation of those values
skews the calculation so far to the negative
that internal debate is unnecessary.
Frequently, individuals are capable of effectively rationalizing their values
(it's not difficult to imagine that all variables considered,
the objective utility of the additional ice cream is negative for most people).
In this way they are behavioral [[heuristics]]:
subjective utility
***
_Having_ a value, simply acknowledging that some behavior is good,
requires no effort, and has no perceivable effect on the person.
Everyone _has_ dozens of values.
_Maintaining_ a value means acting according to it so often
that doing so is instinctive.
***
Personal values, as commonly described,
tend towards benevolence (charity, family)
or at least individual good[^1] (health, physical fitness),
but like habits, people maintain bad values as often or more.
[^1]: "good" is a **societal** value,
a common value that individuals are expected to maintain.
Angry, wasteful, and unhygienic people
maintain bad values that cause them to act the way they do,
contrary to their own objective interest.
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---
id:
aliases: []
title: Risk Management
tags:
- authorship/original
- destiny/permanent
- status/incomplete
- topic/risk
- type/encyclopedia
---
# Risk Management
%%
## TALK
This note is for business risk management methods,
even those not commonly labeled as such.
Note that risk management and actuarial science
have significant overlap in their common definitions.
For the purposes of [[this-notebook]],
legitimate mathematical methods for quantifying risk
fall under [[actuarial-science]].
Other (qualitative) methods
as well as [[strategy|decisions]] based on methods of either type
are appropriate for this note.
%%
**Risk management** is a professional discipline
that is concerned with mitigating negative consequences of uncertainty on a business
(i.e. managing [[risk]]).
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---
# Risk
%%
## TALK
This note is for the concept of risk
as understood by laymen and mathematicians.
## TODO
1. Relocate profession specific content to [[risk-management]].
2. If [[#In Cost Estimation]]'s content needs to remain,
and it isn't suited for [[actuarial-science-for-construction-estimating]],
another cross-topic [[risk-management-for-construction-estimation]] will be necessary.
I suspect that with some edits it will be most appropriate for [[actuarial-science]].
%%
Risk, in common parlance, is the chance that something "bad" will happen.
As such, it is generally understood as a binary, win/loss relationship.
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---
# Uncertainty
%%
## TALK
## TODO
%%
The term "uncertainty" refers to the possibility of multiple outcomes.
## Information
@@ -25,7 +35,7 @@ In statistical inference and [[strategy]],
> is the amount a decision maker would be willing to pay
> for information prior to making a decision.
Suppose information $I$ is available to a decision maker
Suppose information $I$ is available to a decision maker.
Consider these two scenarios:
1. the decision maker does not purchase the information
@@ -45,9 +55,8 @@ V(I) &= P(D)|I - P(D) \\
\end{align*}
$$
> [!info] Expectation Notation
> When forecasting, the payout of decisions is unknown,
> thus
When forecasting, the payout of decisions is unknown,
thus
$$
\mathbb{E}\left[V(I)\right] = \mathbb{E}\left[P(D)\right] - \mathbb{E}\left[P(D)|I\right]
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---
id:
aliases: []
title: Utility
tags: []
---
# Utility
[Utility](https://en.wikipedia.org/wiki/Utility)
is a measure of a party's satisfaction
with a certain state of the world.