07 November 2021

Welcome back to the Week That Was series highlighting things from the interwebs which are interesting, noteworthy and/or probably worth your time.

Articles📝, Tweet(s)📱, Videos🎥, Charts 📈 all fair game with or without attendant commentary.

This week is defintely a visual edition.


🏞️ Africa’s Rivers

Here are the rivers in Africa.

Africa's Rivers


₿📈 Hashrates

After China finally started seriously enforcing their ban on mining a few months ago, we got a collapse in the hashrate (amount of CPU dedicated to securing the BTC blockchain) which was yet another real testing point for the project - as low hashrate is theoretically an existential threat to the network given it means less and less compute is required to try and attempt a double-spend attack on the bitcoin blockchain.

This was followed by a big drop in the price from it’s ~$60k levels to just over $20k.

Nonetheless most forward thinking folks saw this as a positive as it meant the network would become far less reliant on centralised computing power in a single geography. The hashrate is returning to it’s all time high levels - as is the price.



🤔📖 Learn Stuff Quickly

Josh W Comeau has 📝a great blog aimed at developers, however he’s got a neat entry on how to learn things which is broadly applicable that I wanted to share here.

He focuses on two broad categories of learnings and how the convergence of the two, in the right mixture as well as making intentional mistakes and a few other areas, to conquer any topic/project.

  1. Guided: Reading a tutorial, taking a course, watching a YouTube video. Anything where you’re following a guide.

  2. Unguided: Creating your own projects from scratch, extending a tutorial, looking things up in the docs. Anything where you aren’t following a guide.

Learn Stuff

📝Learn Stuff Quickly


🚂🛢️⚡💽 The Death and Birth of Technological Revolutions

A quite excellent explication of Carlota Perez’s theory of Technological Revolutions from Ben Thompson on his long-lived and still impressive 📝Stratechery newsletter.

Technological Revolutions

Per the piece, Perez’s thesis was based on over 200 years of history and the patterns she identified in four previous technological revolutions:

  • The Industrial Revolution began in Great Britain in 1771, with the opening of Arkwright’s mill in Cromford
  • The Age of Steam and Railways began in the United Kingdom in 1829, with the test of the ‘Rocket’ steam engine for the Liverpool-Manchester railway
  • The Age of Steel, Electricity and Heavy Engineering began in the United States in 1875, with the opening of the Carnegie Bessemer steel plant in Pittsburgh, Pennsylvania
  • The Age of Oil, the Automobile, and Mass Production began in the United States in 1908, with the production of the first Ford Model-T in Detroit, Michigan
  • The Age of Information and Telecommunications began in the United States in 1971, with the announcement of the Intel microprocessor in Santa Clara, California

Technological Revolutions 2

Carlota engages actively on all media, and is happy to debate interpretations of her theory and it’s application on unpacking the current day.

Ben notes further, on crypto specifically:

For what it’s worth my suspicion is that the current Installation period for crypto — if that is indeed where we are — has a long ways to run, which is another way of saying most of the economy will remain in the current paradigm for a while longer. The time from the Intel microprocessor to the Dotcom Bubble bursting was 30 years (and, it should be noted, there were a lot of smaller, more localized bubbles along the way); Satoshi Nakamoto only published his paper in 2008. Thirteen years after 1971 was 1984, the year the Mac was introduced; the browser was another 9 years away. It’s one thing to see the future coming; it’s something else entirely to know the timing. On that Perez and I can certainly agree.

📝The Death and Birth of Technological Revolutions


🌎📊 Latinometrics

Following the example of Asia, Latin America is eradicating extreme poverty.



👶🏼👩🏻👴🏾 Generations

From the Silents to Generation Alpha. Here’s how the age generations tear down.



Self-Integrity And The Drowning Child

🗞️The Browser highlighted a post on 📝LessWrong by Rationalist and AI theorist Eliezer Yudkowsky where he asks his usual challenging and controversial questions:

Peter Singer asked whether we are bound to save a child drowning in shallow water close by. For 50 years, everybody confronted with that question replied: “Yes”. The argument here is not quite for “No”, but it leads to a slippery slope — “Let me think about that”. If you, the observer, are wearing costly new clothes, can you take 15 seconds to strip them off before jumping in? A minute?

📝Self-Integrity And The Drowning Child


🎙️ Moats, Skill, Luck, Decision Making


Michael Mauboussin is “your favourite investor’s favourite investor”.

The lads at acquired sat down with him to dive deep into his incredible body of work: untangling skill and luck, measuring moats, persistence of returns in venture capital, decision making and — particularly timely — expectations investing and how to think about valuations in the current 2021 market environment.


🔢📐 Derivatives

An old 📝k2p blog takes derivatives (in terms of x in respect of time) to the 6th degree - in case you didn’t know.


  • Velocity (v) = dx/dt
  • Acceleration (a) = d²x/dt²
  • Jerk (j) = d³x/dt³
  • Snap (s) = d⁴x/dt⁴
  • Crackle © = d⁵x/dt⁵
  • Pop (p) = d⁶x/dt⁶

Yes; snap, crackle and pop


Elon Musk noted in a tweet that Tesla’s Autopilot spends alot of effort on minimising jerk…. unsure whether that was a double entendre.

Musk Jerk


🛣️ The Longest Road

From Curiosity

The longest road in the world to walk, is from Cape Town (South Africa) to Magadan (Russia). No need for planes or boats, there are bridges. It’s 22.387 miles and it takes 4.492 hours to travel. It would be 187 days walking nonstop, or 561 days walking 8 hours a day.

Longest Road


🧠🤔 Philosopher Beliefs

Today’s sociology is tomorrow’s history


PhilPapers have published their 2020 survey results from questions they asked nearly 1,800 philosophers on a variety of philosophical subjects and problems. Some of the responses - make of these what you will:

  • 81.7% think abortion is sometimes permissible
  • 75.1% think capital punishment is impermissible
  • 50.9% endorse revising gender categories
  • 40.4% endorse eliminating race categories
  • 64.2% think human genetic engineering is sometimes permissible
  • 44.9% would choose immortality, 41.3% would not, while 13.6% selected “other” as a response
  • Almost 30% support capitalism, but 53% support socialism, while close to 20% choose “other”
  • Respondents were about evenly divided on whether time travel is metaphysically possible
  • Only 2% thought particles could be conscious


🧬🦠 Immunity

From Kurzgesagt:

You are not a person, you are a planet, made of roughly 40 trillion cells. There is so much of you, that if your cells were human-sized, you would be as big as 20 Mount Everests. For your creepy-crawly inhabitants, this makes your body an ecosystem, rich in resources and warmth and space. A perfect place to move into and have a family. While some of these guests are welcome, most are not. Your immune system is the guardian of this planet, the force tasked with protecting yourself against the constant danger of invasion.


🎨 Paris on a Rainy Day

Rainy Day

“Paris on a Rainy Day”, Joseph Zbukvic, watercolor on paper, 2021


💬 Deep Cuts

“Love doesn’t just sit there, like a stone, it has to be made, like bread; remade all the time, made new.” ― Ursula K. Le Guin, The Lathe of Heaven


🧮📹 One More Thing

This one is quite geeky but stay with it and a fascinating story along with some great insights emerge. It’s about how finding a general solution to the cubic equation was long considered impossible, until we gave up the requirement that math reflect reality.


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