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Category: General

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  • khoitsma
  • Blog Navigation, General
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Ecclesiastes 12

  • khoitsma
  • General, Personal
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Fear God and keep his commandments, for this is the whole duty of man.

Eccl 12:13

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What If, and Maybe Jul 2022

  • khoitsma
  • General, Observation, Personal
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What if each able-bodied homeowner mowed his/her own lawn, maybe also mowed the lawn of their neighbor who wasn’t able-bodied?

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The Analog Clock Jul 2022

  • khoitsma
  • General, Kids (middle school and up), Mathematics
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25 or 6 to 4
– Robert Lamm, Chicago

Haven’t we all looked at the clock face and wondered about the magical times where the hands cross?

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Best of Seven Jul 2022

  • khoitsma
  • General, Kids (middle school and up), Probability/Statistics
  • 0 Comments

The question here is, what is the likelihood of each possible playoff outcome?

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Constructive Comments Jun 2022

  • khoitsma
  • General, Observation, Personal
  • 0 Comments

Personal opinions on residential construction


craftsman home

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  • Close Encounters in Batting Averages July 2025
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My Dash apps

My GeoGebra app
What is the most general equation for the area of a triangle?
The Wait calculation
The incessant obsolescence postulate (IOP)
Barnard’s Star and the 'Wait Equation'
IOP counterargument
The amazing arbelos (only good on a real desktop)
Surprises found in the arbelos (1954)
Arbelos from Wolfram MathWorld
Circle Theorems
• Circle Theorems Marked
• Circle Theorems — Practice
Two Semicircles
Japanese temple geometry
★ Sister Celine — a beautiful life
★ John Lienhard IV on Ingenuity
★ Charles Stutzenbaker, Field Biologist
Neal Stephenson on the OS
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