Readings | Cosme

September 28, 2026

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Escaping the Build Trap

by Melissa Perri

How Effective Product Management Creates Real Value. Shifting from shipping features to delivering outcomes.

Key Insights

Measure success by outcomes and value delivered, not by features shipped
It's not the customer's job to come up with solutions; the product manager must deeply understand the problem and find the best one
A good strategy is not a plan, it's a framework for making decisions, deployed from vision down to team-level options

July 26, 2026

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Le Petit Prince

by Antoine de Saint-Exupéry

A children's tale that is really about adults: what we lose growing up, and what it costs to bond with someone.

Key Insights

I read it in French, and I think reading it in the original language matters: much of the book lives in words that cannot be translated without losing meaning
'Apprivoiser' is the clearest case, translated as 'to tame', which loses the mutual, patient act of creating ties that the fox actually describes
What is essential is invisible to the eye: the value of something comes from the time and care you have given it

Cover of The Blocksize War: The Battle for Control over Bitcoin’s Protocol Rules

January 25, 2026

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The Blocksize War: The Battle for Control over Bitcoin’s Protocol Rules

by Jonathan Bier

A detailed account of the intense conflict within the Bitcoin community from 2015 to 2017 regarding the scaling of the network.

Key Insights

The conflict was not just about technical limits but about the fundamental vision of Bitcoin
Small blockers prioritized decentralization over short-term transaction capacity
The resolution of the war solidified Bitcoin's status as a decentralized and immutable protocol

Cover of 97 Things Every Programmer Should Know

July 28, 2025

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97 Things Every Programmer Should Know

by Kevlin Henney

Collective Wisdom from the Experts - A collection of programming wisdom from experienced developers covering various aspects of software development.

Key Insights

Programming is as much about communication as it is about code
Simple solutions are often better than complex ones
Continuous learning and adaptation are essential in software development

Cover of How to Win Friends and Influence People

March 9, 2025

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How to Win Friends and Influence People

by Dale Carnegie

Timeless principles for building relationships and influencing others through genuine interest and understanding.

Key Insights

Show genuine interest in others to build meaningful relationships
Remember that a person's name is the sweetest sound to them
Avoid criticism and focus on positive reinforcement

February 7, 2025

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La Filosofía de Bitcoin

by Álvaro D. María

How Bitcoin changes the way we relate to money, redefines property ownership, and can transform our political system.

Key Insights

Money is a social construct reflecting power structures
Bitcoin redefines the concept of private property
Removes the state's monopoly on money creation

Cover of 21 Lessons: What I've Learned from Falling Down the Bitcoin Rabbit Hole

December 20, 2024

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21 Lessons: What I've Learned from Falling Down the Bitcoin Rabbit Hole

by Gigi

A dive into the philosophical, economic, and technological lessons learned from exploring Bitcoin's rabbit hole.

Key Insights

Bitcoin represents a fundamental shift from trust-based to proof-based systems
The 21 million supply cap creates a new form of absolute scarcity in the digital age
Bitcoin's proof-of-work transforms energy into digital value and security

August 8, 2024

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The Obstacle Is The Way

by Ryan Holiday

The timeless art of turning trials into triumph through stoic philosophy and practical wisdom.

Key Insights

Obstacles are opportunities in disguise: they reveal our path forward
Perception, action, and will are the three disciplines to overcome challenges
What stands in the way becomes the way: embrace difficulties as fuel for growth

May 6, 2024

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Never Split the Difference

by Chris Voss

Learn the techniques used by FBI hostage negotiators to get what you want in any negotiation.

Key Insights

Use tactical empathy to understand the other party's perspective
The 'No' response is often the beginning of negotiation
Calibrated questions give you control without confrontation

April 18, 2024

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The Pragmatic Programmer

by Andrew Hunt & David Thomas

Your Journey to Mastery - A comprehensive guide to becoming a more effective and professional software developer.

Key Insights

Invest in your knowledge portfolio continuously
Write code that's easy to change and maintain
Think beyond the immediate problem to the bigger picture

Cover of The Subtle Art of Not Giving a F*ck

September 15, 2023

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The Subtle Art of Not Giving a F*ck

by Mark Manson

A counterintuitive approach to living a good life by choosing what to care about and what to let go.

Key Insights

Choose what to care about wisely - you can't care about everything
Pain and struggle are necessary for growth and meaning
Take responsibility for your problems to gain control over them

May 23, 2023

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Clean Code

by Robert C. Martin

A handbook of agile software craftsmanship that teaches how to write code that is readable, maintainable, and professional.

Key Insights

Code should be written for humans to read, not just for machines to execute
Functions should do one thing and do it well
Meaningful names are crucial for code readability

Cover of Bitcoin: La tecnología Blockchain y su investigación

January 5, 2023

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Bitcoin: La tecnología Blockchain y su investigación

by Féliz Brezo Fernández and Yaiza Rubio Viñuela

A technical exploration of Bitcoin's blockchain technology and its research applications.

Key Insights

Blockchain provides a distributed system for transaction recording
Bitcoin implements advanced cryptographic concepts for network security
Research in blockchain opens up new possibilities for applications beyond cryptocurrencies

November 3, 2022

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Start with Why

by Simon Sinek

How Great Leaders Inspire Everyone to Take Action - Understanding the power of purpose and the Golden Circle framework.

Key Insights

People don't buy what you do, they buy why you do it
The Golden Circle: Why, How, What framework for communication
Great leaders inspire action by starting with purpose

February 7, 2022

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The Little Book of Stoicism

by Jonas Salzgeber

Ancient wisdom for everyday life - practical Stoic philosophy for modern challenges and personal growth.

Key Insights

Focus on what you can control, accept what you cannot
Virtue is the highest good and leads to eudaimonia
Practice negative visualization to appreciate what you have

August 26, 2021

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Sprint

by Jake Knapp

How to Solve Big Problems and Test New Ideas in Just Five Days - A practical guide to design sprints.

Key Insights

Five-day process to solve big problems and test ideas quickly
Structured approach prevents common pitfalls in innovation
Rapid prototyping and testing saves time and resources

March 8, 2021

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Java Head First

by Kathy Sierra & Bert Bates

A Brain-Friendly Guide to learning Java programming with a unique approach that engages multiple learning styles.

Key Insights

Learning through multiple modalities enhances retention
Hands-on practice is crucial for programming mastery
Understanding concepts before memorizing syntax

November 2, 2020

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The Power of Habit

by Charles Duhigg

Why We Do What We Do in Life and Business - Understanding the science of habit formation and how to change them.

Key Insights

Habits follow a cue-routine-reward loop
Keystone habits can trigger positive changes in other areas
Willpower is a finite resource that can be strengthened

August 12, 2020

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Atomic Habits

by James Clear

An Easy & Proven Way to Build Good Habits & Break Bad Ones.

Key Insights

Systems are more important than goals
1% better every day compounds to massive change
Environment shapes behavior more than motivation