Pedro Arantesrose

All Posts


From Reactive Planning Model to Natural Planning Model

Until some point, the project was manageable, but after some feature requests and bug reports, it became unfeasible. In addition, almost every bug fix or feature implementation broke other "uncorrelated" parts of the application. That slowed us down a lot because our client and his customers were using the software, and we had to rush to fix the new bugs (yes, we didn't have testing at that time).
Articles,June 16, 2021
Reading time: 5 minutes

Benjamin Franklin's Schedule

Benjamin Franklin's schedule is a scheme of employment for the twenty-four hours of a natural day.
Zettelkasten,June 16, 2021

A Letter to My Friend - Create

I like writing because it's timeless. It's telepathy. Maybe what you write now will reach someone that will need to read it, in another time, whether days or decades from now, in another space across the world. You'll be connecting your mind with theirs.
Articles,June 13, 2021
Reading time: 4 minutes

Radical Delegation Framework

This framework helps you assign and do work that must be done.
Zettelkasten,June 09, 2021
Reading time: 2 minutes

Natural Planning Model

It's the more effective way to think about projects and situations because it makes thinks happen sooner, better, and more successfully.
Zettelkasten,June 07, 2021

Reactive Planning Model

When a team starts a project without planning ahead, it's possible that the reactive planning model ensues.
Zettelkasten,June 06, 2021

Spacing Effect (Learning)

It shows that more information is retained in your long-term memory by multiple spaced-out study sessions.
Zettelkasten,June 05, 2021

Opportunity Cost

Opportunity cost is the loss of the benefit that could have been enjoyed if the best choice was chosen instead.
Zettelkasten,June 03, 2021

Context Switching

Each extra task or "context" you switch eats up 20-80% of your overall productivity.
Zettelkasten,June 02, 2021

Focus Brings Unconscious Support

If you're focused on something, your unconscious mind supports you in what you're focusing on.
Zettelkasten,May 31, 2021

Ownership May Prevent Parkinson's Law

If you have X time to complete some tasks and don't have enough motivation, why should you finish them in less time?
Zettelkasten,May 26, 2021

Daily Scrum

It's a Scrum ceremony whose purpose is to inspect progress toward the Sprint Goal.
Zettelkasten,May 24, 2021

Skydiving Terminal Velocity

When an object is in a skydiving fall, its velocity will be constant after enough time, considering that the drag force is proportional to the square of the speed.
Articles,May 23, 2021
Reading time: 5 minutes


It's a situation where a group of people meets to think about a problem and try to have as many ideas as possible.
Zettelkasten,May 13, 2021

Distributed Cognition

It's a process of getting things out of your head and into objective, and reviewable format.
Zettelkasten,May 12, 2021

Slack and Efficiency

"Slack is the natural enemy of efficiency and efficiency is the natural enemy of slack."
Zettelkasten,May 10, 2021

My Story - The Dance Teacher

The worse was that I was not being the owner of my life and it was being ruled by others, not by me. So, I asked myself, "How long won't I live my life and I'll let others live it for me?" Trust me, that question turns my life upside down, in the best of sights.
Articles,May 09, 2021
Reading time: 4 minutes

ACID (Database Systems)

ACID stands for atomicity, consistency, isolation, durability.
Zettelkasten,April 26, 2021

The Threefold Model for Identifying Daily Work

It helps you to identify the kind of daily work that you can be engaged in.
Zettelkasten,April 24, 2021

People Systematically Overlook Subtractive Changes

When faced with a problem, people tend to prefer solutions that add new elements rather than removing elements, even if removing is the more efficient solution.
Zettelkasten,April 23, 2021

System Mental Models

System mental models are models that is used to help you understand how a system works.
Zettelkasten,April 23, 2021

Decision Mental Models

Decision mental models are models that is used to make a decision.
Zettelkasten,April 22, 2021

The Four-Criteria Model for Choosing Actions in the Moment

It helps you decide which action you take in the present moment.
Zettelkasten,April 22, 2021

Smart Contracts

Smart contracts are computer programs stored on a blockchain that will be executed when predetermined conditions are satisfied.
Zettelkasten,April 19, 2021

Atkinson-Shiffrin Memory Model

It's a model of memory proposed in 1968 by Richard Atkinson and Richard Shiffrin.
Zettelkasten,April 11, 2021

Long-Term Memory

It provides the lasting retention of information and skills.
Zettelkasten,April 11, 2021

Short-Term Memory

Short-term memory can keep information for somewhere on the order of 10 seconds up to 30 seconds, when the information is not being actively rehearsed.
Zettelkasten,April 11, 2021

Ideas in Open Loop

When you decide to do some task, obligation, or plan without executing it, the mind creates an open loop.
Zettelkasten,April 10, 2021

Pleasure Principle (Psychology)

It's the instinctive seeking of pleasure and avoiding of pain to satisfy biological and psychological needs.
Zettelkasten,April 09, 2021


Procrastination is the action of delaying or postponing something.
Zettelkasten,April 09, 2021

Hyperbolic Discounting

This theory states that humans discount the value of a later reward, by the factor that increases with the length of the delay.
Zettelkasten,April 06, 2021

Mental Models

Mental models are frameworks, worldviews, representations, or explanations of how something works. They're how we understand the world.
Zettelkasten,April 06, 2021

No B.S. Time Management for Entrepreneurs

This book is expressively for entrepreneurs and business owners who wear many hats—those who can't resist piling more responsibility onto his own shoulders, who has more great ideas that time and resources to take advantage of them, who runs (not walks) through each day. Your time is incredibly valuable to you, and you are constantly 'running out of it.'
Books,April 04, 2021
Reading time: 21 minutes


It's known as the "feel-good" neurotransmitter.
Zettelkasten,April 04, 2021

Social Media Addiction

Anxiety, depression, loneliness, and addiction are problems caused by social media addiction.
Zettelkasten,April 04, 2021

Dan S. Kennedy

One of the very highest paid direct-response copywriters in America.
Zettelkasten,April 03, 2021

Product/Market Fit (PMF)

Product/market fit means being in a good market with a product that can satisfy that market.
Zettelkasten,April 02, 2021

Organic Social Media

Is the way you post your content and let the platform distribute it organically.
Zettelkasten,March 30, 2021

Paid Social Media

You have more control about the public which will see your content.
Zettelkasten,March 30, 2021

Human Multitasking

Multitasking is the "ability" to perform more than one task or activity at the same time.
Zettelkasten,March 29, 2021

Last Mile in a Software Project

These final adjustments can have fewer tasks compared with the core, but it is the laborious part, then the time to finish it is almost as the core time implementation.
Articles,March 22, 2021
Reading time: 5 minutes

Startup Accelerator

It's fixed-term and cohort-based programs that include mentorship and educational components for startups.
Zettelkasten,March 14, 2021

Venture Building's Startups Problems

Startups created in Venture Buildings (VB) may have some problems.
Zettelkasten,March 14, 2021

Venture Capital

It's type of financing that invertors provides to startup companies and small business with a potential long-term growth.
Zettelkasten,March 14, 2021

Startup Incubator

The purpose of a startup incubator is to help entrepreneurs grow their business.
Zettelkasten,March 09, 2021

Startup Studio

It's an organization that creates startups following a repetitive process. It acts as a co-founder to startups.
Zettelkasten,March 08, 2021

Proof of Work

Is a form of cryptography zero-knowledge proof that one part, the prover, proves to others, the verifies, that some amount of computational resources was used to complete some task.
Zettelkasten,March 07, 2021


Is describes a set of meetings/events/ceremonies, tools/artifacts and roles to help teams structure and manage their work.
Zettelkasten,February 25, 2021
Reading time: 3 minutes


Inflation is the rise of the general prices of an economy in a period of time caused by money supply growth.
Zettelkasten,February 18, 2021

Money Supply

In macroeconomics, money supply is the quantity of the money in circulation that an economy have in a point of time.
Zettelkasten,February 18, 2021

The 90-90 Rule

When you finished 90% of any project, the remaining 10% will take the same amount of time of the fist 90%.
Zettelkasten,February 07, 2021

Last Mile Problem

The last thing to be done to something works/arrives/finishes.
Zettelkasten,February 06, 2021

Dunning-Kruger Effect

Is a cognitive bias hypothesis in which people with low ability at a given task overestimate their ability at that task.
Zettelkasten,January 30, 2021

Flow State (Psychology)

It's the most efficient state when doing a task.
Zettelkasten,January 28, 2021

Law of Triviality

People within an organization commonly give disproportionate weight to trivial issues.
Zettelkasten,January 07, 2021

Parkinson's Law

It stands that "work expands to fill the time available for its completion."
Zettelkasten,January 07, 2021

Five Habits for the Next Five Years

Habits are the less spent energy strategy that we can use to achieve goals in our life. Habits require more time to complete the objectives, require more consistency, but it lasts forever.
Articles,January 02, 2021
Reading time: 3 minutes

Lightning Decision Jam

Replace all open and unstructured discussion with a clear solving problem process.
Zettelkasten,August 10, 2020
Reading time: 3 minutes

AIDA Model

It was created to understand better the process, or steps that the consumer goes through, before purchasing a product.
Zettelkasten,August 08, 2020

Design - Density

Dense UI should be applied to display tables, lists and long forms because the user can scan, interact and compare the information easily.
Zettelkasten,July 03, 2020

Psychological Trigger

Psychological triggers are the stimulus that creates a reaction in a brain and/or body without he/she notices.
Zettelkasten,June 29, 2020

Better Writing

Write like you speak, do not try writing with more elegant prose.
Zettelkasten,June 09, 2020

Facts Don't Change Our Minds

It's hard to change someone's mind because we're telling him/her leaves some group, which causes fear of being alone about the new fact.
Zettelkasten,June 01, 2020

Information and Digital Content in Modern Society

People use the Internet to connect to others, entertainment, or to be informed.
Zettelkasten,May 30, 2020

Reading Metacognitively

You try every time to make connections with another subject.
Zettelkasten,May 29, 2020

The Feynman Technique

It's a method that you can use the learn about anything.
Zettelkasten,May 29, 2020

Sleep in Two Shifts

A notable advantage of first and second sleep is that it provides two periods of increased activity, creativity, and alertness across the day, rather than one long period of activity in which sleepiness builds up across the day and the productivity wanes.
Zettelkasten,May 26, 2020
Reading time: 2 minutes

Chunking and Memory

Also, chunking improves our creativity because we need to create a meaningful connection among groups.
Zettelkasten,May 24, 2020

Metaphors to Explain the Brain

In the 1940s, the current one, with the creation of the computers, the brain was said to operate as a computer - we save and process memories as computers does. This analogy is also called Information Processing (IP) metaphor.
Zettelkasten,May 23, 2020

The Evolution of Anxiety

The Delayed Return Environment causes chronic anxiety and stress because our brain was designed to live in an Immediate Return Environment.
Zettelkasten,May 22, 2020
Reading time: 2 minutes


Zettelkasten is a method in which you write down your thoughts in notes, tag and connect them over time.
Zettelkasten,May 21, 2020