Tomas Pueyo Profile picture
Aug 11, 2021 7 tweets 2 min read Read on X
I humbly have so many questions about #autism, esp clustering. Do you have answers?

1. Clusters
Autism is known as a spectrum, but it sounds to me like it’s not a line, rather a space. Traits don’t linearly increase or decrease. ≠ ppl have ≠ traits.

Are there trait clusters?
2. Genetic Clustering
20%-25% of autism can be traced to >100 genes. The same gene variants should produce the same traits. We know that for a few like SynGAP-1. Why don’t we for all? Why so little correlation btw gene variants and traits?
3. Non-genetic causes
Why only ~25% of autism is traced back to genes?
Is the rest too difficult to trace back? Why?
Or is it because there are other drivers?
Epigenetics?
Why don’t we know about other drivers?
(Please no antivaxxing)
4. AI classifiers
It sounds like this complexity of traits & roots would fit an AI classifier, but I haven’t found any. Why?
Is it because the data is not easily accessible?
If so, why is there no DB with the traits of millions of anonymized autists?
5. Cluster prognosis
Why all this talk about clusters? The clustering would be valuable to know how traits would evolve over time. Does something like this exist?
6. Cluster support
If a child is 5 but we know he belongs to the same cluster as a group of adults, we can ask the adults what worked or didn’t for them & apply to the kid. Does this exist?
7. Ableism
What ableist things did I say? I’m sure I did, even if I try to get better and avoid them. It’s an improvement process.

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More from @tomaspueyo

Sep 18
If wetlands prevent floods and straight rivers are bad, why do we keep doing it?

Here's why, and how we can do better, along with the most AMAZING visualizations of rivers:Image
What LA did to its river is the worst you can do: A line of concrete devoid of life, replacing nature with brutalist geometry
Image
Image
That's the type of disregard for nature that ends with situations like this one:
Read 23 tweets
Sep 11
One event made these things possible:
Roman civilization
Industrial Revolution
The oil wealth of Arab countries
Russia's invasions
The Mongol Empire
Globalization
Southern Europe richer than Northern Africa
And more

What was it?
The death of an ocean
I'm super excited about this! AFAIK, nobody has put all these facts together. You're learning about it here 1st!

To understand what happened, we need to start in this region of the world. Do you notice something special? Image
1. SEAS
It has plenty of huge inland seas! Notice how we can't find such seas anywhere else in the world*

The Mediterranean, Black, Azov, Caspian, Aral and Red Seas (and the Persian Gulf) are all in the same area, either cut off from oceans or connected by very narrow passes. Image
Read 18 tweets
Sep 8
I've been banging my head on a pbm and I need help, Twitter

Why are there huge dunes on some coasts and not others?

You have dunes like these ones in the Namib desert in Namibia. Why? How do they form? Why only here?

I'll update this thread as I get answers! Image
Apparently strong, dry winds blow from the interior towards the Atlantic ocean, accumulating the sand. As it accumulates, it blows or falls into the ocean, creating these huge slopes. OK.


Image
Image
Image
Image
You can even see these dunes in the satellite
The obvious question becomes: Why just there and not elsewhere on the Namib desert coast? Image
Read 16 tweets
Aug 30
Can solar energy costs keep shrinking?
The wealth of humanity and health of the environment are at stake

Solar allies: Costs will keep shrinking!
Skeptics: They're can't! They're already growing!
Who's right?

Here's the story of the biggest energy revolution of the decade:
1. Solar is already the cheapest source of electricity!
It's also one that most ppl love, so few ppl block it—unlike nuclear or fossil fuels

So solar energy is the best candidate to get us cheap energy and with very little CO2 emissions to stop global warming Image
2. There's no such thing as a rich country that consumes little energy. The more energy a country consumes, the richer it is

If we want to be richer, we MUST generate more electricity Image
Read 22 tweets
Aug 19
Pumpkins can grow to over 2000 lbs (1 ton) for the same reason the Dutch countryside is purple at night: Because plants are green. Thread 🧵
These pumpkins come from Alaska
Why? Because in the growing season, it gets 20 hours of sunlight
More sunlight, more energy, more growth
Image
Image
They're not the only vegetable to grow so big. Here are Alaskan cabbages. Same principle: 20h of light a day Image
Read 13 tweets
Aug 16
🌱Vertical Farming is about to change dramatically our relationship to food, agriculture, land, and rural areas, as it replaces traditional farming:

It's superior in dozens of very important ways and just has one obstacle: economics, but they're improving every day
Thread 🧵 Image
The amount of land dedicated to crops has grown incessantly over the last few centuries Image
It's now 15% of all habitable land—about the size of Russia Image
Read 22 tweets

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