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March 2025

Visualization is Marketing - 2 Questions to ask before every visualization
Who is the audience?
 • 
Levi
Data Lake, Warehouse, Fabric - What is the difference?
When we work with data it is really important to understand the sources.
 • 
Levi
The Leap Year Bug
How many days have passed since 1900-01-01?
 • 
Levi
The CLEAR Method for Visualization
Matt Harrison's Method for Effective Visuals
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Levi

February 2025

Use Chaos to Create True Random Numbers
In ML, we usually see code like the below.
 • 
Levi
BrAIn vs Brain - Statistics vs Logic
We know that correlation doesn’t imply causation.
 • 
Levi
Why Your Friends Have More Friends Than You Have - Explained With Code.
Average class size paradox
 • 
Levi
3
How To Handle NULLs In SQL
In the last post, I wrote about the chaos NULL can cause in SQL.
 • 
Levi
Why NULL Is a Trouble-Maker in SQL - Explained with Ice Cream
Imagine that you are running an Ice Cream shop in your city.
 • 
Levi
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