---
id:
aliases: []
title: 2026-01-09
tags:
  - authorship/original
  - destiny/permanent
  - status/draft
  - type/daily
dg-publish: true
---
# 2026-01-09

## 2026-01-09 10:00

### 2100 Crystal Drive

`#600 ? WHITE ?` had incorrect sort codes.

#### Lighting Control

I took off lighting per plans (E510)
in spite of proposal stating "local control".
Will have to be changed.

#### Labor Factor

Fire Alarm
Switchgear
Feeders
Subfeeds
Corridors
Amenity
Retail
Units

#### Fixtures

> [!failure]
> Several fixtures were erroneously based on NM cable.

I built some fixtures with \#12/3 in areas with emergency lighting
to be an unswitched hot.
Joel is having me change them to \#12/2.

#### Units

> [!failure]
> One unit type typical was missing `Area` quantities.
> Another had no takeoff.

#### Labor Plan

$$
\mathbb{E}\left[\frac{\text{Hours Per Unit}}{\text{Openings Per Unit}}\right] \approx .75~\text{Hours Per Opening}
$$

High Rise .110--.120 hr/sqft

## 2026-01-09 12:00

$$
\begin{gather*}
\frac{146097}{400} = 365.2425~\text{Days Per Year} \
\frac{20871}{400} = 52.1775~\text{Weeks Per Year} \
\frac{6957}{1600} = 4.348125~\text{Weeks Per Month}
\end{gather*}
$$

$$
\frac{365.2425~\text{Days Per Year}}{7~\text{Days Per Week}}
= 52.1775~\text{Weeks Per Year}
$$

$$
\frac{52.1775~\text{Weeks Per Year}}{12~\text{Months Per Year}}
= 4.348125~\text{Weeks Per Month}
$$

## 2026-01-09 14:45

[[bid-price-modeling]]

Suppose a true cost model,
accounting for all relevant information available at time $t$.

$C(t)$ returns a distribution whose [scale](https://en.wikipedia.org/wiki/Scale_parameter)
decreases with $t$, and $C(0)$ maps to a single value.
$t>0$ is time until the final payment.

> ![503x480](https://upload.wikimedia.org/wikipedia/commons/thumb/8/89/Log-normal-pdfs.png/960px-Log-normal-pdfs.png)
>
> Figure: lognormal distributions with the same [location](https://en.wikipedia.org/wiki/Location_parameter)
> varied by [scale](https://en.wikipedia.org/wiki/Scale_parameter).

## 2026-01-09 16:28

### Occam's razor

> [!info] Also Known As
> * the principle of parsimony
> * the law of parsimony

recommends searching for explanations constructed with the smallest possible set of elements.
Attributed to William of Ockham, 14th-century English philosopher and theologian.

> _Entia non sunt multiplicanda praeter necessitatem_
> ("Entities must not be multiplied beyond necessity")

> "Of two competing theories, the simpler explanation is to be preferred."

> [!quote] [[klugman-et-al_2019_loss-models#4.2 The Role of Parameters]]
> The principle of parsimony states that the simplest model
> that adequately reflects reality should be used.
