11/10/2023

The Pareto Rule of Prediction/Forecast - from "The signal and the noise - Silver"

Great viz that explains how your first 20% of effort provides you an 80% of accuracy level on your predictions/forecasts, i.e. by applying rules of critical thinking and basic statistics you will get a very good prediction/forecast of the possible future scenarios.


In a business environment, where what it counts is the relative position of your predictions/forecasts vs. the ones competition does, 80% could be good enough or really below par and that can make a huge difference.

At the end if you do not have any forecasts/prediction tool, investing 20% of your perfect effort (that depends on the question you are trying to address) will be a game changer.


ps.: Forecast is different from Prediction (see a previous substack on that)

The signal and the noise - Silver







11/05/2023

On AI


And that is it…there’s not much to add!


Another brilliant cartoon from KAL

👇




KAL’s cartoon

How Imaginary Numbers Were Invented

A great video that explains how imaginary number (thus complex numbers) were derived!

On top you get a geometrical explanation for the quadratic & cubic equation solutions!

Absolutely a must see. Enjoy!




 (picture generated by Bing Image Generator-> Imaginary numbers in a complex plane with Salvador Dali style)




11/01/2023

Added a book to the library - The New New Thing: A Silicon Valley Story → Lewis

“…In the weird glow of the dying millennium, Michael Lewis set out on a safari through Silicon Valley to find the world’s most important technology entrepreneur. He found this in Jim Clark, a man whose achievements include the founding of three separate billion-dollar companies. Lewis also found much more, and the result—the best-selling book The New New Thing—is an ingeniously conceived history of the Internet revolution. …”

amazon.es/gp/product/B008UXLJN6/ref=ppx…

https://www.amazon.es/gp/product/B008UXLJN6/ref=ppx_yo_dt_b_d_asin_title_o00?ie=UTF8&psc=1 


Would you rather be a manager or a leader?

https://substack.com/profile/66725113-pedro/note/c-42899651?utm_source=notes-share-action&r=13q5fd 


I really struggle to divide both activities! For me Leadership (or to lead) is 1 of the 4 key activities any good manager has to master, the others are: (i) to plan, (ii) to organize and (iii) to control.

For me it was always a puzzle how one can you make such segregation. It is true that in your journey from junior to senior manager the leadership traits have to be significantly more developed, but that is part of the journey.

This dichotomy Manager vs. Leader will always be a puzzle to me (or not if we look where it started, but that is for a post in itself).


https://www.economist.com/business/2023/10/23/is-being-a-leader-really-sexier-than-being-a-managerEnjoy another great article from the Economist!

10/31/2023

Quotes - Economic forecasts without underlying structure- The signal and the noise - Silver

 “…in contrast, if you just look at the economy as a series of variables and equations without any underlying structure, you are almost certain to mistake noise for a signal and may delude yourself (and gullible investors) into thinking you are making good forecasts when you are not. …”

“…. Who needs theory when you have so much information? But this is categorically the wrong attitude to take toward forecasting, especially in a filed like economics where the data is so noisy. Statistical inferences are much stronger when backed up by theory or at least some deeper thinking about their root causes….”