vault backup: 2026-04-07 17:18:46

This commit is contained in:
2026-04-07 17:18:46 -04:00
parent a840d436ac
commit 87cb763ea4
4 changed files with 34 additions and 4 deletions
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@@ -22,3 +22,4 @@ yearly: "[[2026]]"
* circle back * circle back
* go from there * go from there
* touch base * touch base
* low hanging fruit
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--- ---
# 2026-04-07 07:21:00 # 2026-04-07 07:21:00
> [!quote] [[how-to-measure-anything-in-project-management#Conflating Uncertainty with Knowing Nothing]] > [!quote] [[hubbard_2025_project-management#Conflating Uncertainty with Knowing Nothing]]
> Some objections to providing probability estimates > Some objections to providing probability estimates
> seem to be based on the presumption > seem to be based on the presumption
> that if they don't know something exactly, they know nothing. > that if they don't know something exactly, they know nothing.
@@ -27,11 +27,13 @@ yearly: "[[2026]]"
> as opposed to whatever range represents their uncertainty, > as opposed to whatever range represents their uncertainty,
> however wide that range may be. > however wide that range may be.
I would not be surprised to hear of an estimator responding this way
even after Hubbard's calibration.
Hubbard repeatedly conflates estimates of uncertain events Hubbard repeatedly conflates estimates of uncertain events
with personal estimates of trivia questions with certain answers. with personal estimates of trivia questions with certain answers.
These are functionally identical, These are functionally identical,
but _feel_ very different. but _feel_ very different.
Hubbard could do better to correct this bias. Hubbard could do better to address this bias.
If you don't know the answer offhand, If you don't know the answer offhand,
imagine it has been lost to time. imagine it has been lost to time.
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---
id: 2026-04-07T11:30:41-04:00
aliases: []
title: 2026-04-07 11:30:41
tags:
- authorship/original
- destiny/permanent
- status/draft
- type/periodic/timestamped
dg-publish: true
date-created: 2026-04-07T11:30:41-04:00
daily: "[[2026-04-07]]"
weekly: "[[2026-W15]]"
monthly: "[[2026-04]]"
quarterly: "[[2026-Q2]]"
yearly: "[[2026]]"
---
# 2026-04-07 11:30:41
## Feeder Wiring Method Selection
Relevant to [[feeders-takeoff]] and [[wiring-method-selection]]:
PVC is only an option if:
* conduit size is not larger than allowed by slab thickness,
* or either node is located on a slab-on-grade level.
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@@ -92,8 +92,9 @@ $$
$$ $$
where where
* $\Delta V$ = Voltage drop in volts ($V$) * $\Delta V$ = Voltage drop in volts (V)
* $I$ = Current in amperes ($A$) * $I$ = Current in amperes (A)
* $Z$ = Effective impedance in ohms
* $L$ = Length of wire one way in feet ($\text{ft}$) * $L$ = Length of wire one way in feet ($\text{ft}$)
> [!important] > [!important]