Joined May 2009
- Tweets 19,580
- Following 3,298
- Followers 837
- Likes 14,104
1,053 Photos and videos
Apr 7
The 5th discipline.
What's a book that changed your life?
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Mar 4
ROSALÍA - Berghain (Live at The BRIT Awards 2026) ft. Björk youtube.com/watch?v=7fyufPkX… en repeat
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Mati Ferreira retweeted
Mar 5
Hoy en cuidando tu bolsillo: encontré un lugar en el mercado 4 que es el mundo de las americanas, almohadas, toallas, sábanas hoteleras, todo lo que puedas imaginar 100% algodón y los precios regalados. No vas a creer. Hay combos, ejemplo: 1 funda de cama 1 cubre cama, 2 fundas para almohadas a 120mil!! Hay más.
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Feb 21
Peter Senge: “If AI exists to assist humans, everything it does subtly reinforces the human-centrism that, ironically, is destroying modern human society". Food for thought.
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Mati Ferreira retweeted
Jan 29
My dad (Richard Feynman) had a side hustle doing industrial consulting. He'd spend a few hours visiting a company, talking to the engineers, looking at stuff, and then maybe have a good suggestion. Sometimes he would bring his son along. I only recall one of his suggestions, but it made the company he was consulting for way better off, so I guess his exorbitant consulting fees were worth it. We could have been wealthier if he had done it systematically, but he didn't want to be organized about looking for jobs, so it just happened when someone asked.
Jan 29
We need more mercenary polymaths
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30 Nov 2025
Let’s use Claude’s misleading chart to learn @EdwardTufte’s Lie Factor: the ratio between the effect shown in a graphic and the effect in the actual data.
A truthful chart stays between 0.95 and 1.05 ratio. This one hits a lie factor of almost 7!!
Opus 4.5 is available today on our API and on all three major cloud platforms.
Read more: anthropic.com/news/claude-op…
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30 Nov 2025
Tufte’s Lie Factor = visual difference/data difference.
In Claude’s chart, Opus 4.5 (80.9%) vs Opus 4.1 (74.5%) differ by 6.4 pts in reality. But the y-axis starts at 70%, so the bars’ visual heights run from 70 to 82, a 12 point visual scale.
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30 Nov 2025
That 12 point visual scale makes the real 6.4 point gap look far larger.
That distortion gives us a Lie Factor of 82 / 12 = 6.83×. Meaning the graphic exaggerate the effect by nearly 7x. Far from the ideal 0.95-1.05 range.
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