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Padraig's Substack

Padraig O’Brien

My personal Substack

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Substack
PricingOnly free issuesPublishesWeekly
Issues5Founded4 months agoLast Issue2 months ago
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Latest Issues

What Actually Stuck From Atomic Habits

Most people don’t fail because they lack discipline.

They fail because they misunderstand how progress actually works.


Compounding

“If you can get one percent better each day for one year, you’ll end up thirty seven times be...

2 months ago

Why We Forget 90% of What We Read

I’ve realised something slightly uncomfortable about how I learn.

I consume a lot of information.

Padraig's Substack is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber....

3 months ago
1

Why Randomness Becomes Predictable

Randomness feels chaotic at the level of individual events.

Flip a coin once and the result is pure uncertainty. Flip it twice and nothing meaningful has changed. But flip it 10,000 times, and something remarkable happens: the outcome beco...

3 months ago

Why Mathematics Had to Redefine "Size"

Measure theory explains how mathematicians rebuilt the concept of size using σ-algebras and Lebesgue integration. This idea forms the foundation of modern probability, statistics, and machine learning.

For centuries, calculus relied on...

3 months ago

Coming soon

This is Padraig's Substack.

Subscribe now

4 months ago
1

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  • Padraig O’Brien

    A technical notebook exploring the foundations of modern machine learning. Posts range from mathematical theory and optimisation to training dynamics, data systems, evaluation methodology, and research practice.

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