vault backup: 2026-04-21 12:46:22

advanced-tables.md

@@ -6,6 +6,8 @@ tags:
 ---
 # Advanced Tables
 
+[[obsidian]] community plugin
+
 | One | Two | Three |
 | ---:| ---:| -----:|
 |   1 |  -2 |       |

convex-hull.md

@@ -7,10 +7,13 @@ title: Convex Hull
 ---
 # Convex Hull
 
-> [!quote] [Wikipedia](https://en.wikipedia.org/wiki/Convex_hull)
+In [[geometry]],
-> the **convex hull**, **convex envelope** or **convex closure** of a shape
+the **convex hull** of a shape
-> is the smallest [convex set](https://en.wikipedia.org/wiki/Convex_set "Convex set")
+(also **convex envelope** or **convex closure**)
-> that contains it.
+is the smallest [convex set](https://en.wikipedia.org/wiki/Convex_set "Convex set")
+that contains it.[^1]
+
+[^1]: [Wikipedia](https://en.wikipedia.org/wiki/Convex_hull)
 
 ```tikz
 \usepackage{pgfplots}

functional-estimating.md

@@ -9,6 +9,13 @@ title: Functional Estimating
 ---
 # Functional Estimating
 
+%%
+This note is LLM output
+intended to illustrate the problem
+of [[uncertainty]] in [[construction-estimating]]
+using mathematical concepts and notation.
+%%
+
 Suppose a function
 
 $$

timestamped/2026-02-17_16-36-35.md

@@ -15,8 +15,14 @@ or totally misleading, depending on the context.
 
 [^1]: [Wikipedia](https://en.wikipedia.org/wiki/Earned_value_management) (emphasis added)
 
-EVM can be an objective measure of _progress_,
+EVM can be argued to be an objective measure of _progress_,
 but measuring _performance_,
 variance of actual cost/hours versus estimated,
-(obviously) requires an estimate,
+(obviously) requires estimates,
-which is subject to bias and error.
+which are subject to bias and error.
+If you argue that subject matter expert estimates _are_ objective
+under a Bayesian interpretation,
+then sure, but then EVM is not unique.
+
+EVM WBS's, as a form of [[estimate-decomposition]],
+suffer from its weakness of compounding inaccuracy.