Over 850 days of sleep, mood, and location data in charts. (⚠️ For data & sleep nerds only!)

Above 85 is the best. That’s a sleep score which means the night was great. If you start your day with assessing how well you slept, looks like we’re on the same team.

In the last years many people have turned from sleep-deprived into sleep-obsessed. Catching a glance of an Oura ring on someone’s finger, or hearing them mention Matthew Walker, marks them as a potential ally — a fellow sleep-tracking nerd! 😍

What helps bring it to the next level? Data.


Data analysis of over 13k responses to the Value of Time Calculator.

Image by RODOLFO BARRETO on Unsplash

Spend an hour cleaning the apartment myself, or pay for a cleaner, and use that hour to read a book? How much would I need to get paid to spend a Saturday on a work project?

You face these questions every day. And, whether consciously or not, you do make decisions about them. But, how do you know that the choices you make are good?

The only way to know would be to quantify how much an hour of your time is worth for you. Luckily, there is a tool that…

Vectorization and linear regression to predict engagement rate.

Photo by Paul Hanaoka on Unsplash

Data analysis is just one fun thing to do on a weekend, but what’s way more fun is to play a fortune teller. That’s the feeling* that leads some strange people (well, I know at least one) to decide to self-study machine learning. 🤷‍♀️

These people try to apply models to everything they encounter. And in this post one of such ML newbs is fighting with a dataset of tweets to answer the question:

Join this thrilling quest!


I’m a self-learning beginner in ML. Most…

Analysis and visualisation of 850 days of work, learn, and sleep data. Which location makes me more productive?

Photo by Priscilla Du Preez on Unsplash.

How long do you work each day? By work, I don’t mean talking by the water cooler, taking 15 minutes to make a cup of coffee, or replying to all your Whatsapp messages on (or just in) the toilet. Also not the casual popping-over to Twitter, or writing “just one” personal email with 100 details about your last attempt to make kombucha.

I mean the real work time.

One way to measure it, is to track and categorise how you spend time on your laptop. …

Data Analysis, Stats & Visualisation of 13k+ responses to the Value of Time Calculator

Photo by Malvestida Magazine on Unsplash

How much is an hour of your time worth? You can look at how much you earn. But, if someone paid you 2 times more per hour would you sacrifice an hour of your free time to split the good and bad lentils like Cinderella?

The worth of your time is not just how much you’re paid. You know it and, consciously or not, you assign a value to your time and based on this evaluation you make choices in life.

It’d be preferable to make better-informed decisions about how to spend your time. …

Photo by Estúdio Bloom on Unsplash

As if bacteria in the bananas wasn’t enough, there was also a lemon ritual.

We’d drink tea with lemon and sugar. But, before cutting the lemon you had to pour hot water over it.

Not just hot water from the tap. You had to boil water, place the lemon on a heat-resistant surface— like the side of a kitchen sink—, and pour the steaming water over the fruit, making sure each side has been poured over.

Mum did it and, after I was old enough to use a gas stove to soft boil an egg, I did it too.


Photo by Louis Hansel @shotsoflouis on Unsplash

Everybody knew it was not wise to eat the end of a banana. How big of a piece they would leave was their discretion.

Somehow, a belief was constructed that there is a particular species of an African fly that lays eggs in the end of the bananas.

(Don’t ask how, let’s leave this as one of the mysteries of the 90s in Eastern Europe.)

Let’s assume for a moment it was true, as a mind of a 9-year old did.

The obvious consequence of eating the end of the banana was exposing yourself to the risk of eating flies’…

Photo by Steve Johnson on Unsplash

Photo by Marcela Rogante on Unsplash

Photo by Fidel Fernando on Unsplash

I put a fake tomato on the scales. The plate goes down. So far so good.

The lower the item drops the more it weighs, I reason. Isn’t that what Newton was about?( — a 7-year old Marta never thought, but wishes she did, because it’d make for a good story.)

I see other kids are putting cylindrical blocks on the other plate of the scales.

I’ve already concluded most of them were morons, based on yesterday’s inability to solve for 2(2+3), but such a unified display of moronism? Suspicious.

I observe the following:

a) They…


📈 Aspiring data scientist. Rationality fan. EA. Condensing a stream of thoughts into #100words a day. Need an accountability coach? 🔥 bit.ly/2NTP6eB

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